referencing an article with multiple authors apa

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Reference List: Author/Authors

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Note:  This page reflects the latest version of the APA Publication Manual (i.e., APA 7), which released in October 2019. The equivalent resource for the older APA 6 style  can be found here .

The following rules for handling works by a single author or multiple authors apply to all APA-style references in your reference list, regardless of the type of work (book, article, electronic resource, etc.).

Note:  Because the information on this page pertains to virtually all citations, we've highlighted a few important differences between APA 6 and APA 7 with underlined notes written in red.

Single Author

Last name first, followed by author initials.

Ahmed, S. (2012).  On being included: Racism and diversity in institutional life . Duke University Press.

Two Authors

List by their last names and initials. Separate author names with a comma. Use the ampersand instead of "and."

Soto, C. J., & John, O. P. (2017). The next big five inventory (BFI-2): Developing and assessing a hierarchical model with 15 facets to enhance bandwidth, fidelity, and predictive power. Journal of Personality and Social Psychology , 113 (1), 117-143. http://dx.doi.org/10.1037/pspp0000096

Three to Twenty Authors

List by last names and initials; commas separate author names, while the last author name is preceded again by ampersand.  This is a departure from APA 6, which only required listing the first six authors before an ellipsis and the final author's name.

Nguyen, T., Carnevale, J. J., Scholer, A. A., Miele, D. B., & Fujita, K. (2019). Metamotivational knowledge of the role of high-level and low-level construal in goal-relevant task performance. Journal of Personality and Social Psychology, 117 (5), 879-899. http://dx.doi.org/10.1037/pspa0000166

More Than Twenty Authors

List by last names and initials; commas separate author names. After the first 19 authors’ names, use an ellipsis in place of the remaining author names. Then, end with the final author's name (do not place an ampersand before it). There should be no more than twenty names in the citation in total.

Pegion, K., Kirtman, B. P., Becker, E., Collins, D. C., LaJoie, E., Burgman, R., Bell, R., DelSole, R., Min, D., Zhu, Y., Li, W., Sinsky, E., Guan, H., Gottschalck, J., Metzger, E. J., Barton, N. P., Achuthavarier, D., Marshak, J., Koster, R., . . .  Kim, H. (2019). The subseasonal experiment (SubX): A multimodel subseasonal prediction experiment. Bulletin of the American Meteorological Society , 100 (10), 2043-2061. https://doi.org/10.1175/BAMS-D-18-0270.1

Group Author

Group authors can include corporations, government agencies, organizations, etc; and a group may publish in coordination with individuals. Here, you simply treat the publishing organization the same way you'd treat the author's name and format the rest of the citation as normal. Be sure to give the full name of the group author in your reference list, although abbreviations may be used in your text.

Entries in reference works (  e.g. dictionaries, thesauruses, and encyclopedias) without credited authors are also considered works with group authors.

Merriam-Webster. (2008). Braggadocio. In Merriam-Webster’s Advanced Learner’s English Dictionary . Merriam-Webster.

When a work has multiple layers of group authorship (e.g. The Office of the Historian, which is a part of the Department of State, publishes something), list the most specific agency as the author and the parent agency as the publisher.

Bureau of International Organization Affairs. (2018). U.S. contributions to international organizations, 2017 [Annual report]. U.S. Department of State. https://www.state.gov/u-s-contributions-to-international-organizations/

Unknown Author

When the work does not have an author move the title of the work to the beginning of the references and follow with the date of publication. Only use “Anonymous ” if the author is the work is signed “Anonymous.” This is a new addition to APA 7.

Merriam-Webster's collegiate dictionary (11th ed.). (2003). Merriam-Webster.

NOTE : When your essay includes parenthetical citations of sources with no author named, use a shortened version of the source's title instead of an author's name. Use quotation marks and italics as appropriate. For example, parenthetical citations of the source above would appear as follows: ( Merriam-Webster's , 2003).

Two or More Works by the Same Author

Use the author's name for all entries and list the entries by the year (earliest comes first). List references with no dates before references with dates.

Urcuioli, P. J. (n.d.).

Urcuioli, P. J. (2011). 

Urcuioli, P. J.  (2015).

When an author appears both as a sole author and, in another citation, as the first author of a group, list the one-author entries first.

Agnew, C. R. (Ed.). (2014). Social influences on romantic relationships: Beyond the dyad . Cambridge University Press.

Agnew, C. R., & South, S. C. (Eds.). (2014). Interpersonal relationships and health: Social and clinical psychological mechanisms. Oxford University Press.

References that have the same first author and different second and/or third authors are arranged alphabetically by the last name of the second author, or the last name of the third if the first and second authors are the same.

Arriaga, X. B., Capezza, N. M., Reed, J. T., Wesselman, E. D., & Williams, K. D. (2014). With partners like you, who needs strangers?: Ostracism involving a romantic partner. Personal Relationships, 21(4) , 557-569.

Arriaga, X. B., Kumashiro, M., Finkel, E. J., VanderDrift, L. E., & Luchies, L. B. (2014). Filling the void: Bolstering attachment security in committed relationships. Social Psychological and Personality Science, 5 (4), 398-405.

Two or More Works by the Same Author in the Same Year

If you are using more than one reference by the same author—or the same group of authors listed in the same order—published in the same year, first check to see if they have more specific dates ( this recommendation is new to APA 7) . Works with only a year should be listed before those with a more specific date. List specific dates chronologically.  If two works have the same publication date, organize them in the reference list alphabetically by the title of the article or chapter. If references with the same date are identified as parts of a series (e.g. Part 1 and Part 2), list them in order of their place in the series. Then assign letter suffixes to the year. Refer to these sources in your essay as they appear in your reference list, e.g.: "Berndt (2004a) makes similar claims..."

Berndt, T. J. (2004a).  Children’s friendships: Shifts over a half-century in perspectives on their development and their effects.  Merrill Palmer Quarterly, 50 (3) , 206-223.

Berndt, T. J. (2004b).  Friendship and three A’s (aggression, adjustment, and attachment).  Journal of Experimental Child Psychology, 88 (1) , 1-4.

Introductions, Prefaces, Forewords, and Afterwords

Cite the publishing information about a book as usual, but cite Introduction, Preface, Foreword, or Afterword (whatever title is applicable) as the chapter of the book.

Lang, J. M. (2018). Introduction. In Dujardin, G., Lang, J. M., & Staunton, J. A. (Eds.), Teaching the literature survey course (pp. 1-8). West Virginia University Press.

Home / Guides / Citation Guides / APA Format / How to cite in APA when there are multiple authors

How to cite in APA when there are multiple authors

This article covers how to cite a reference in APA style (7th ed.) when there are multiple authors. Broadly speaking, in an APA style “the author” refers to the person(s) or group(s) who should be given credit for the work being referenced.

Here’s a run-through of everything this page includes:

In-text citations when there are multiple authors

Reference list entries when there are multiple authors, troubleshooting.

APA 7th ed. uses the author-date citation system for citing references in text. Unless you are citing a source with no author in APA , the structure in parenthetical citations includes placing the author’s last name/surname, followed by a comma, and the publication year in parentheses. In narrative citations, this information is incorporated into the sentence.

Parenthetical citation for one author:

(Author Last Name, Year Published)

(Curtis, 2020)

Narrative citation for one author:

Author Last Name (Year Published)

Curtis (2020)

Two authors

For a work with two authors, include both authors’ last names in every in-text citation, whether narrative or parenthetical. In parenthetical citations, use an ampersand (&) between the authors’ last names.

Parenthetical citation for two authors:

(1st Author & 2nd Author, Year Published)

(Curtis & Williams, 2020)

Narrative citation for two authors:

1st Author & 2nd Author (Year Published)

Curtis & Williams (2020)

Three or more authors

When citing a journal paper in APA with three or more authors, only enter the last name of the first author listed and add “et al.” after it. “Et al.” is Latin for the phrase “and others,” which is why it is used as a substitute for two or more authors’ last names.

Parenthetical citation for three or more authors:

(1st Author et al., Year Published)

(Harris et al., 2020)

Narrative citation for three or more authors:

1st Author et al. (Year Published)

Harris et al. (2020)

Here is a page with more information on when to use “et al.” in APA style .

Group authors

The same guidelines for in-text citations apply when the authors of a source are a distinct group or organization such as a government agency, association, nonprofit organization, business, hospital, task force, or study group. To confirm whether a reference was written by individual author(s) or a group, check the cover or title page.

Hint: for an online resource, the author could be the name of the organization hosting the webpage or website, rather than the name of just one content contributor.

Before using an abbreviated group name as the author of your citation, spell out the abbreviation and define the group one time first in the text. Afterward, use the abbreviation of the group name throughout the rest of the paper.

Group author in-text citation examples:

First parenthetical citation with group abbreviation included: (Association of Jesuit Colleges and Universities [AJCU], 2020)

Subsequent parenthetical citations: (AJCU, 2020)

First narrative citation with group abbreviation included: The Association of Jesuit Colleges and Universities [AJCU] (2020)

Subsequent narrative citations: The AJCU (2020)

Avoiding ambiguity in in-text citations

Sometimes, in-text citations that have three or more authors, some of whom have the same last name, and the same publication year can look like they are the same reference when using the et al. abbreviation. For example, Curtis et al. (2020) could refer to

Curtis, Acres, Thomas, Henderson, and Tyler (2020)

Curtis, Acres, Thomas, Henderson, Maxey, Key, Smith, and Esparza (2020)

To avoid this ambiguity and confusion for the reader, write out as many names as possible for the in-text citation until the references are distinguished, and then add “et. al” to abbreviate the other authors’ names.

Curtis, Acres, Thomas, Henderson, et al. (2020)

Curtis, Acres, Thomas, Henderson, Maxey, et al. (2020)

When only the final author is different, list all of the names in every citation to avoid any confusion.

Curtis, Acres, Thomas, Henderson, and Esparza (2020)

APA has slightly different reference structures for different source types (e.g., book, website, journal article, etc.), but each structure generally includes the following:

Author last name, Author initials. (Date Published). Title. URL or DOI if available .

Need more help with citing a particular source? Find further guidance in this APA citations guide.

One or two authors

For references with one or two authors, cite using the four-part structure.

Two individual authors example:

Smith, J., & Jones, S. (1994). Making a movie star. Behind the Scenes Stories: A Journal of Celebrity Life, 44 (2), 192–200. https://doi.org/l4nds0r

One group author example:

The American Marine Society. (2003). Whale mating patterns in the new millennium. The American Marine Society Magazine , 17-20 . https://fams.gov/article/2003/whale-mating-patterns-in-the-new-millennium

2 – 20 authors

In APA 7th ed., up to 20 authors should be included in a reference list entry. Write out the last name and first initial(s) for each contributor.

2–20 authors example:

Wright, A., Komal, G., Siddharth, D., Boyd, G., Cayson, N., Beverley, K., Travers, K., Begum, A., Redmond, M., Mills, M., Cherry, D., Finley, B., Fox, M., Ferry, F., Almond, B., Howell, E., Gould, T., Berger, B., Bostock, T., Fountain, A. (2020). Styling royalty. London Bridge Press.

21+ authors

For references with more than 20 authors, after listing the 19th author replace any additional author names with an ellipsis ( … ) followed by the final listed author’s last name and first initial(s).

21+ authors example:

Wright, A., Komal, G., Siddharth, D., Boyd, G., Cayson, N., Beverley, K., Travers, K., Begum, A., Redmond, M., Mills, M., Cherry, D., Finley, B., Fox, M., Ferry, F., Almond, B., Howell, E., Gould, T., Berger, B., Bostock, T., . . . Booker, T. (2020). Eating well: Tips from 23 lifestyle authors. Food Magazine. https://foodmag.com/article/2020/tips-from-22-lifestyle-authors

Solution #1: How to order the names of multiple authors in an APA reference

Authors should be cited in the exact order that they are listed by the source, even if they have not been listed alphabetically.

Solution #2: How to cite an article with more than 20 authors in APA style

If an article has more than 20 authors, all authors do not need to be listed in the reference. Instead, name the first 19, then use an ellipsis (…), then add the name of the final author listed. The ellipsis acts as a substitute for all the names between the first 19 and the final authors. No ampersand (&) is needed before the final name.

For example:

Richards, B.A., Lillicrap, T. P., Beaudoin, P., Bengio, Y., Bogacz, R., Christensen, A., Clopath, C.

Costa, R. P., de Berker, A., Ganguli, S., Gillon, C. J., Hafner, D., Kepecs, A., Kriegeskorte,

N., Latham, P., Lindsay, G. W., Miller, K. D., Naud, R., Pack, C. C., … Kording, K. P. (2019). A deep learning framework for neuroscience. Nature Neuroscience ,  22 (11), 1761–1770. https://doi.org/10.1038/s41593-019-0520-2

When making an in-text citation, only write the first author’s last name followed by “et. al.” This applies to both parenthetical and narrative citations.

(Richard et al., 2019)

Richard et al. (2019)

Solution #3: How to cite an article written by an organization in APA style

• Organization as author

When an article is written by an organization, use the typical four-part APA structure (author, date, title, publisher) and cite the organization as the author.

American Nurses Association. (2019). 2018 Annual Report, American Nurse Today, 14 (6), 29-36.

https://www.nursingworld.org/~49d621/globalassets/docs/ana/ana-annual-report-for-

• Organization as author and publisher

If the organization that authored an article is also its publisher , omit the publisher’s name in the citation.

• In-text citation when an organization is an author

Use the organization’s name as the author. For example:

American Nurses Association [ANA] (2019)

If an organization’s name is long, abbreviate it by doing the following:

• First, write the organization’s name in full the first time, followed by the abbreviation in parenthesis.
• After this, you may use the abbreviation without including the complete name.

1 st in-text narrative citation: American Nurses Association [ANA] (2019)

1 st in-text parenthetical citation: (American Nurses Association [ANA] (2019)

After this distinction is made, abbreviations in-text can be used as demonstrated below:

Narrative citations: The ANA (2019)

Parenthetical citations: (ANA, 2019)

Published October 28, 2020.

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To cite a source with multiple authors and an edition number in APA style, you need to know the names of the authors, title of the book, edition number, and publisher. The in-text citation of a book with multiple authors and an edition number is similar to citing a journal or a book reference with multiple authors. An example of a book reference with three authors and an edition number, along with a template, is given below:

In-text citation template and example:

Author Surname et al. (Publication Year)

LeBuffe et al. (2012)

Parenthetical

(Author Surname et al., Publication Year)

(LeBuffe et al., 2012)

Reference list entry template and example:

Author Surname, F. M., Author Surname, F. M., & Author Surname, F. M. (Publication Year). Book title (edition number). Publisher

LeBuffe, P. A., Naglieri, J. A., & Manderth, A. (2012). Devereux early childhood assessment for preschoolers (2nd ed.). Kaplan Early Learning Company.

Use numerals to indicate an edition number. The word “edition” is abbreviated as “ed.” Italicize the book title and follow sentence case for capitalization.

Citing a source that has multiple authors with the same last name and same initials is the same as citing a source with different authors. There is no need to add the initials of the authors in in-text citations as all surnames (although the same) appear in a single source. Examples of a book reference with three authors with the same last name and initials and their templates are given below:

Dunn et al. (2007)

(Dunn et al., 2007)

Author Surname, F. & Author Surname, F. (Publication Year). Book title. Publisher.

Dunn, L. M., Dunn, L. M., & Dunn, L. M. (2007). Peabody picture vocabulary test-IV. American Guidance Service.

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APA Citation Style, 7th edition: Journal Article with 2 Authors

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Digital Object Identifier (DOI)

What is a DOI? A DOI ( digital object identifier ) is a unique alphanumeric string assigned by a registration agency (the International DOI Foundation) to identify content and provide a persistent link to its location on the internet. 

NOTE: It is regarded as the most important part of the citation because it will accurately direct users to the specific article.

Think of it as a "digital fingerprint" or an article's DNA!

The rules for DOIs have been updated in the 7th edition of the Publication Manual of the American Psychological Association. They should be included as URLs, rather than just the alphanumeric string.

Correct:  

• http://doi.org/10.1186/1471-2288-12-114
• http://dx.doi.org/10.1186/1471-2288-12-114

Incorrect:     

• doi: 10.1186/1471-2288-12-114
• Retrieved from http://doi:10.1186/1471-2288-12-114
• FREE DOI Look-up (Cross-Ref)
• DOI System: FAQ
• Looking up a DOI
• DOI Flowchart

Journal Article with Two Authors (p. 198)

Helpful Tips:                 

DOI: If a journal article has a Digital Object Identifier (DOI) listed, you will always include this identifier in your reference as a URL.

Online Database: For works from databases that publish works of limited circulation (such as the ERIC database) or original, proprietary material available only in that database (such as UpToDate), include the name of the database or archive and the URL of the work. If the URL requires a login or is session specific, meaning it will not resolve for readers, provide the URL of the database or specific archive home page or login page instead of the URL for the work.

Print: If you viewed a journal article in its print format , be sure to check if it has a DOI listed. If it does not, your reference to the article would end after you provide the page range of the article.

Date: When possible, include the year, month, and date in references. If the month and date are not available, use the year of publication.

General Format 

In-Text Citation (Paraphrase): 

(Author Surname & Author Surname, Year)

In-Text Citation (Quotation):

(Author Surname & Author Surname, Year, page number)

References:

Author Surname, First Initial. Second Initial., & Author Surname, First Initial. Second Initial. (Year). Article title: Subtitle. Journal Title, Volume (issue), page range. http://dx.doi.org/xx.xxxxxxxxxx

In-Text Citation (Paraphrase):

(Sillick & Schutte, 2006)

(Sillick & Schutte, 2006, p. 43)

Sillick, T. J., & Schutte, N. S. (2006). Emotional intelligence and self-esteem mediate between perceived early parental love and adult happiness. E-Journal of Applied Psychology, 2 (2), 38-48. http://dx.doi.org/10.3390/ijerph182010800

ePub Ahead of Print

ePub Ahead of Print  articles, also labeled  Advanced Online Publication  articles, may not have a volume number, issue number, or page numbers assigned to them. If you cannot find a fully published version of the article that includes this information, you can cite the article as an advanced online publication, noting its status where you would usually include the volume, issue, and page numbers. If possible, update your reference to the final version of the source when it becomes available.

Muldoon, K., Towse, J., Simms, V., Perra, O., & Menzies, V. (2012). A longitudinal analysis of estimation, counting skills, and mathematical ability across the first school year.  Developmental Psychology . Advance online publication.  https://doi.org/10.1037/a0028240

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APA 7th Edition Citation Guide Multiple Authors

Source with two authors.

Rules for citing more than one author apply to all sources, regardless of format. Below is an example of a book with two authors.

Use the word "and" between the authors' names within the text and use an ampersand (&) for parenthetical citations.

Reference Page Format:

Author, A. A., & Author, B. B. (Year of Publication). Format the remainder according to resource type.

Reference Page Example:

Loveless, D., & Griffith, B. (2014).  Critical pedagogy for a polymodal world . Birkhäuser.

In-text Citation Examples:

According to Loveless and Griffith (2014) ... ...(Loveless & Griffith, 2014). ...(Loveless & Griffith, 2014, p. 121).

Source with Three to Twenty Authors

For all sources with three to twenty authors, include all of the authors on your References page. 

For in-text citations, sources with three or more authors can be abbreviated to only the first author's last name followed by "et al." For example, (Author et al., Year).

Author, A. A., Author, B. B., Author, C. C. (Year of Publication).  Format the remainder according to resource type .

Somerville, I., Purcell, A., & Morrison, F. (2011). Public relations education in a divided society: PR, terrorism and critical pedagogy in post-conflict Northern Ireland.  Public Relations Review, 37 (5), 548-555. https://doi.org/10.1016/j.pubrev.2011.09.008

According to Somerville et al. (2011) ... ... (Somerville et al., 2011). ... (Somerville et al., 2011, p. 549).

Source with Twenty-One or More Authors

For sources with twenty-one or more authors, write out the first twenty authors on the References page, add an ellipsis (...), and end with the last author. 

For in-text citations, sources with more than twenty authors can be abbreviated to only the first author's last name followed by "et al." For example, (Author et al., Year).

Author, A. A., Author, B. B., Author, C. C., Author, D. D., Author, E. E., Author, F. F., Author, G. G., Author, H. H., Author, I. I., Author, J. J., Author, K. K., Author, L. L., Author, M. M., Author, N. N., Author, O. O., Author, P. P., Author, Q. Q., Author, R. R., Author, S. S., Author, T. T., . . . Author, Z. Z. (Year of Publication).  Format the remainder according to resource type .

Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Aben, R., Abolins, M., AbouZeid, O. S., Abramowicz, H., Abreu, H., Abreu, R., Abulaiti, Y., Acharya, B. S., Adamczyk, L., Adams, D. L., Adelman, J., Adomeit, S., Adye, T., Affolder, A. A., Agatonovic-Jovin, T., Aguilar-Saavedra, J. A., Alen, S. P., . . . Woods, N. (2015). Combined measurement of the Higgs boson mass in pp collisions at √s=7 and 8 TeV with the ATLAS and CMS experiments.  Physical Review Letters, 114 (19), 1-33. https://doi.org/10.1103/PhysRevLett.114.191803

According to Aad et al. (2015) ... ... (Aad et al., 2015). ... (Aad et al., 2015, p. 20).

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APA 7th Edition Citation Guide

• APA 7th Edition Home
• Formatting the Paper Itself
• When and What to Cite

In-Text: Multiple Authors

• In-Text: First and Subsequent Citations
• In-Text: Authors and Dates Matching
• In-Text: Direct Quotations
• In-Text: Secondary Sources
• Reference Examples: Print
• Reference Examples: Electronic
• Reference Examples: Audiovisual Media
• Step 1: Author (Names)
• Step 2: Date
• Step 3: Titles
• Step 4: Source
• Help and Training
• Related Guides

This citation guide is based on The Publication Manual of the American Psychological Association  (7th ed., 2020). The contents are accurate to the best of our knowledge.

Content in this guide was copied with permission from Bethel University (TN) Library .

How to Use This Guide

Citations in APA style include two parts: (1) in-text citations, which are connected to (2) reference list citations.

This guide will help you create in-text citations that correlate with the corresponding reference list citations. Please see Reference Examples  for more details on the reference list.

Note: All sources that are cited in the text must appear in the reference list at the end of the paper except for Personal Communications and similar unrecoverable sources.

Multiple Authors

If you are citing a source that has multiple authors, follow these basic steps.

Two Authors

Always cite both authors' names in-text every time you reference them.

Johnson and Smith (2009) found...

Three or More Authors

If a document has three or more authors, simply provide the last name of the first author with "et al." from the first citation to the last.

Thomas et al. (2007) likened abnormal psychology to...

... distractions (Thomas et al., 2007).

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• Next: In-Text: First and Subsequent Citations >>
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APA 7th Edition Referencing Guide1

• What is APA?

In-text citations

• Reference list
• Chapter in an edited book
• Journal articles & Databases
• Works with multiple authors
• Webpages & online
• General images faqs
• Audiovisual media
• Personal communication
• Study material
• New Zealand legislation
• Other resources
• Tricky health resources
• Health books
• Health journals
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Referencing works with multiple authors

Reference list entries for books, journal articles, or any resource with multiple authors can include up to 20 authors' names before it is necessary to abbreviate.

• For resources with 21+ authors, use the names of the first 19 authors, followed by ellipsis (...) and the name of the final author (i.e., there should be a maximum of 20 authors included in the reference list entry). 

Number of authors to include in text

In-text citations for works with three (3) or more authors can be shortened to the name of the first author and 'et al.' (and page/para. number as usual). 

Important When abbreviating in-text citations with the use of et al., take care to avoid ambiguity.  For example:

(Smith, Jones, & Brown, 2018). (Smith, Jones, Brown, Anderson, Williams, Wilson, & Andrews, 2018).

Both citations above refer to  different works  published in the same year. Both could be shortened to simply (Smith et al., 2018), thereby creating confusion as to which work is being cited. To avoid ambiguity,  the names of as many authors as necessary to distinguish the sources should be used in each citation before abbreviation with et al. For example :

(Smith, Jones, & Brown, 2018). (Smith, Jones, Brown, Anderson et al., 2018).

Referencing a book with two authors

The example below shows how to reference a book with two authors and indicates the different elements needed.

Surname, A., & Surname, A. (Copyright date).   Title: Subtitle in italic sentence case (edition number if applicable.). Publisher.

Dawson, J., & Lucas, R. (1993). Lifestyles of New Zealand forest plants (4th ed.) .   Victoria University Press. 

Reference list entry

Dawson, J., & Lucas, R. (1993). Lifestyles of New Zealand forest plants . Victoria University Press.

Page/paragraph numbers are optional for paraphrased information.

Narrative Dawson and Lucas (1993) argue that ... (p. 67). Parenthetical ... (Dawson & Lucas, 1993, p. 67).

Referencing a work with three or more authors

Stillings, N. A., Weisler, S. E., Chase, C. H., Feinstein, M. H., Garfield, J. L., & Rissland, E. L. (1995).  Cognitive science: An introduction  (2nd ed.). The MIT Press.

Narrative Stillings et al. (1995) argue that ... (p. 67). Parenthetical ... (Stillings et al., 1995, p. 67).

Referencing a work with 21+ authors

List the first 19 authors in correct APA style, followed by an ellipsis (three consecutive dots), then the last author's name in APA style.

Kalnay, E., Kanamitsu, M., Kistler, R., Collins, W., Deaven, D., Gandin, L., Iredell, M., Saha, S., White, G., Woollen, J., Zhu, Y., Chelliah, M., Ebisuzaki, W., Higgins, W., Janowiak, J., Mo, K. C., Ropelewski, C., Wang, J., Leetmaa, A., ... Joseph, D. (1999). The NCEP/NCAR 40-year reanalysis project. Bulletin of the American Meterological Society , 77 (3), 437–471. https://doi.org / fg6rf9 

Narrative Kalnay et al. (1996) outline ... (p. 438). Parenthetical ... (Kalnay et al., 1996, p. 438).

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• Writing Tips

How to Cite Multiple Authors in APA style

3-minute read

• 18th June 2023

According to the Guinness Book of World Records , the highest number of authors to work on a single peer-reviewed academic paper is 15,025. While you may not ever encounter a source with that many authors during your own research , you’ll probably come across works with more than one author.

In this post, we’ll show you how to cite multiple authors in APA style, both in the text and on the reference page.

Creating a Reference List Entry for Two Authors

To write a reference list entry for a work with two authors, follow this basic format when listing the authors:

List the authors by their last names and initials, and use a comma followed by an ampersand to separate the two names. Here’s an example of what this might look like for a book entry:

Citing 3–20 Authors on a Reference Page

APA 7 differs from APA 6 on how to cite 3–20 authors on a reference page. APA 6 requires listing up to six names in full, followed by an ellipsis and the final author’s name. APA 7 requires that you list all the authors’ names, with an ampersand separating the last two. Follow this basic format for up to 20 authors in APA 7:

Here’s what this might look like for a book on the reference page:

Citing More than 20 Authors on a Reference Page

In APA 7, if a work contains 21 or more authors, list the surnames and initials of the first 19, followed by a comma, an ellipsis, and the name of the final author. Follow this basic format:

Note that you should not use an ampersand in this scenario, only an ellipsis.

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How to Cite Multiple Authors in the Text

When writing a narrative citation for a work with two authors, use “and” between the authors’ names rather than an ampersand. Immediately follow the authors’ names with the year of publication in parentheses. For example:

However, for a parenthetical citation , use an ampersand between the authors’ names, followed immediately by a comma and the year of publication. For example:

When citing a work with three or more authors, include the first named author, followed by “et al.” and the year of publication. In a narrative citation, this will look like:

And here’s an example of this in a parenthetical citation:

For direct quotations, you should also include the page number(s) along with the names and year.

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Note : Rules for citing more than one author apply to all sources, regardless of format.

Note : For all sources with three to twenty authors, you must write out all of the authors on the References page.  For in-text citations, sources with three or more authors can be abbreviated to (Author, et al., year) from the first use.

Note : For sources with twenty-one or more authors, write out the first twenty authors and forgo all subsequent authors, but the last, with an ellipsis.

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Journal Article with Three or More Authors

General Format

In-Text Citation (Paraphrase):

(Author Surname et al., Year)

In-Text Citation (Quotation):

(Author Surname et al., Year, page number)

References:

Surnames and initials for  up to twenty authors  should be provided in the reference list.  For more than 20 authors, list the first 19, followed by an ellipses, then list the final author.

Author Surname, First Initial. Second Initial., Author Surname, First Initial. Second Initial., Author Surname, First Initial. Second Initial., Author Surname, First Initial. Second Initial., Author Surname, First Initial. Second Initial., & Author Surname, First Initial. Second Initial. (Year). Article title: Subtitle.  Journal Title, Volume (issue), page range. http://doi.org/xx.xxxxxxxxxx [if available]  OR  [nothing - if in an online database and does not have a doi]  OR  URL to document on website if readers can access.

(Yonkers et al., 2001, p. 1859)

Yonkers, K. A., Ramin, S. M., Rush, A. J., Navarrete, C. A., Carmody, T., March, D., Heartwell, S., & Leveno, K. J. (2001). Onset and persistence of postpartum depression in an inner-city maternal health clinic system.  American Journal of Psychiatry, 158 (11), 1856-1863. http://doi.org/10.1176/appi.ajp.158.11.1856

Helpful Tips:

DOI:  If a journal article has a  Digital Object Identifier (DOI)  listed, you will always include this identifier in your reference  as a URL . You will not have to include a different URL or the database from which you retrieved the article if a DOI is available.  Include a DOI for all works that have a DOI, regardless of whether you used the online version or the print version.

Online Database:  If you viewed a journal article in an  online database  and it does not have a DOI, the reference should be the same as the reference for a print version of the work. In other words, nothing after the page numbers will appear.

Website/Online:  If an online work (not including academic research databases), provide the URL in the reference (as long as the URL will work for readers).

Print:  If you viewed a journal article in its  print format , be sure to check if it has a DOI listed. If it does not, your reference to the article would end after you provide the page range of the article.

Date:  When possible, include the year, month, and date in references. If the month and date are not available, use the year of publication.

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Sources with two authors

If you are citing a source with two authors, the surname of both of the authors should be listed in your in-text citation. You should keep the names in the same order as they are in the source.

The surname and initial(s) of both the authors should appear in the full reference for the source. Use a comma to separate them (as well as an ampersand).

The rest of the reference should follow the usual style for the type of source you are citing.  

In-text citation:

(Reiss & White, 2013, p.6)

Reference list:

Reiss M.J., & White, J. (2013).  An aims-based curriculum: the significance of human flourishing for schools. London:  IOE Press.

Sources with three to five authors

If you are citing a source with three to five authors, cite all authors in the in-text citation the first time it occurs; after this only include the first author's surname followed by 'et al'.

The surname and initial(s) of all the authors should appear in the full reference for the source. Use commas to separate the authors and an ampersand before the last one.

(Rogers, Hallam, Creech & Preti, 2018) - first time

(Rogers et al., 2018) - subsequent references

Rogers, L., Hallam, S., Creech, A., & Preti, C. (2018). Learning about what constitutes effective training from a pilot programme to improve music education in primary schools.  Music Education Research ,  10 (4), 485-497.

Sources with six or more authors

If you are citing a source with six or more authors, the surname of only the first person attributed as one of the source's authors should be included in your in-text citation, followed by the words 'et al'.

All the authors' surnames and initial(s) should appear in the full reference for the source (separated by commas) and with an ampersand before the last author. 

(Battersby et al., 2018)

Battersby, C., Armus, L., Bergin, E., Kataria, T., Meixner, M., Pope, A., Stevenson, K. B., Cooray, A., Leisawitz, D., Scott, D. Bauer, J., Bradford, C. M., Ennico, K., Fortney, J. J., Kaltenegger, L., Melnick, G. J., Milam, S. M., Narayanan, D., Padgett, D., & Wiedner M. C. (2018). The Origins Space Telescope.  Nature Astronomy, 2 , 596-599.

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How to Reference Single and Multiple Authors in APA Format

Kendra Cherry, MS, is a psychosocial rehabilitation specialist, psychology educator, and author of the "Everything Psychology Book."

Emily is a board-certified science editor who has worked with top digital publishing brands like Voices for Biodiversity, Study.com, GoodTherapy, Vox, and Verywell.

• Multiple Authors

APA format establishes a number of clear rules for how to list reference works using author information. How you reference different sources varies depending on the number of authors to whom the source is attributed. For example, the way that you reference a single author will differ somewhat from how you reference a source with multiple authors.

Before you create a reference section for a psychology paper, it is important to know how to properly list books, articles, and other sources as well as in-text citations in APA format. The following guidelines can help you prepare a reference section for your APA format paper.

These guidelines are sometimes referred to as APA 7 since the guidebook for APA formatting is the Publication Manual of the American Psychological Association, 7th edition .

APA Format for No Author

Articles and other works that do not provide an author attribution should begin with the title of the work . If the title is a book, list the title in italics. The volume number, issue number (if available), and page numbers should follow journal titles, while book titles should be followed by the publisher's name.

For example:

• A student guide to APA format. (1997). Psychology Weekly, 8, 13-27.
• The ultimate APA format guidebook. (2006). Student Press.

For in-text citations or those referenced within the body of the text, you will also use the title, either in italics (for books) or in quotation marks (for articles). For example: Using proper APA format ("A student guide to APA format," 1997).

APA Format for One Author

Works by a single author should list the author's last name and initials. The date of publication should be enclosed in parentheses and followed by the title of the article or book. Books and journal titles should be listed in italics. The volume number, issue number, and page numbers of the article should follow journal titles, while book titles should be followed by the name of the publisher.

• McCrae, R. R. (1993). Moderated analyses of longitudinal personality stability. Journal of Personality and Social Psychology, 65 (3), 577-585.
• Bandura, A. (1977). Social learning theory. Prentice-Hall.

One-author in-text citations should include the surname without any suffixes (Jr.) and the date of publication in parenthesis. For example: As Bandura (1997) mentions... or (Bandura, 1977). If you are citing different authors with the same last name, include the first initial: (A. Alper, 2004) and (B. Alper, 2005).

APA Format for Multiple Authors

The APA format for multiple authors varies depending on how many authors a publication has.

Two Authors

Works by two authors should list the last names and first initials separated by an ampersand (&). These names should be followed by the date of publication enclosed in parentheses.

If the work is a journal article, the title of the article should immediately follow the publication date. Next, the title of the book or journal should be listed in italics. If the reference is a journal article, provide the volume number, issue number, and page numbers. For books, list the name of the publisher.

• Kanfer, F. H., & Busemeyer, J. R. (1982). The use of problem-solving and decision-making in behavior therapy . Clinical Psychology Review, 2 (2) , 239-266.
• Buss, A. H., & Pomin, R. (1975). A temperament theory of personality development . Erlbaum.

In-text citations of works by two authors should include the surnames of both authors separated by the word "and" or by an ampersand if using parenthesis. For example: Studies by Buss and Pomin (1975) support... or (Buss & Pomin, 1975).

Three to 20 Authors

According to APA 7 guidelines, works by three to 20 authors are cited by listing the last names and first initials of each author separated by an ampersand. Author names should be followed by the date of publication enclosed in parentheses.

If the work is a journal article, include the title of the article immediately following the publication date. The title of the book or journal should then be listed in italics. If the reference is a journal article, provide the volume number, issue number, and page numbers. For books, list the name of the publisher.

• Abma, J. C., Chandra, A., Mosher, W. D., Peterson, L. S., & Piccinino, L. J. (1997). Fertility, family planning, and women’s health: New data from the 1995 National Survey of Family Growth. Vital and Health Statistics, 23 (9), 1-67.
• Alper, S., Schloss, P. J., Etscheidt, S. K., & Macfarlane, C. A. (1995). Inclusion: Are we abandoning or helping students? Corwin Press.

In-text citations for works by three or more authors should list the first author's name, followed by "et al." in every citation. For example: Alper, et al. (1995) supports...or (Alper, et al, 1995).

However, if you are citing multiple works by similar groups of authors, you may need to include multiple names to avoid confusion. For example: Alper, Schloss, Etscheidt, et al. (1995) discovered...or (Alper, Schloss, Etscheidt, et al., 1995).

Whether citing a source with three, five, seven, or 20 authors, the APA format is the same.

More Than 20 Authors

When a work is credited to more than 20 authors, the reference is listed by providing the names of the first 19 authors followed by . . . and then the final author. The remainder of the reference follows the same format as that for 20 or fewer authors.

Authors' last names and initials are followed by the date of publication enclosed in parentheses. The name of the article is listed immediately after the publication date. The title of the journal or the book title should be provided in italics. The volume number, issue number, and page number should follow journal titles, while book titles should be followed by the publisher's name.

• Pegion, K., Kirtman, B. P., Becker, E., Collins, D. C., LaJoie, E., Burgman, R., Bell, R., DelSole, R., Min, D., Zhu, Y., Li, W., Sinsky, E., Guan, H., Gottschalck, J., Metzger, E. J., Barton, N. P., Achuthavarier, D., Marshak, J., Koster, R., . . . Kim, H. (2019). The subseasonal experiment (SubX): A multimodel subseasonal prediction experiment.  Bulletin of the American Meteorological Society ,  100 (10), 2043-2061.
• Arlo, A., Black, B., Clark, C., Davidson, D., Emerson, E., Fischer, F., Grahmann, G., Habib, H., Ianelli, I., Juarez, J., Kobayashi, K., Lee, L., Martin, M., Naim, N., Odelsson, O., Pierce, P., Qiang, Q., Reed, R., Scofield, S., . . . Thatcher, T. (2001). Instructive falsehoods: Examples and sources . Thommel-Reed.

In-text citations should list the first author's name, followed by "et al." in every citation. You can read more about a few different aspects of referencing sources in APA format if you have book references , article references , and electronic sources .

Frequently Asked Questions

How do i cite a website with no author in apa format.

If a website has no author, cite the title (or the first few words of the reference list entry) followed by the year. APA website citations will also include the website name and URL.

How do I cite a publication with no author in APA format?

If there's no author, the title of the work is listed first followed by the volume number, issue number (if available), and page numbers. If it's a book, the title should be in italics and followed by the publisher's name.

How do I cite an author with two last names?

Works by an author with two last names should list both names. If the name is hyphenated, include both names and the hyphen.

American Psychological Association.  Publication Manual of the American Psychological Association  (7th ed.). Washington DC: The American Psychological Association; 2019.

Purdue Online Writing Lab. In-text citations: Author/authors .

Purdue Online Writing Lab. Reference list: Author/authors .

By Kendra Cherry, MSEd Kendra Cherry, MS, is a psychosocial rehabilitation specialist, psychology educator, and author of the "Everything Psychology Book."