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How to cite in APA when there are multiple authors

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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

In-text citations when there are multiple authors

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.

Example:

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.

Example:

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

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

Reference list entries when there are multiple authors

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

Troubleshooting

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.

For example:

(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.

For example:

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-

2018.pdf

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.

For example:

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.

How do I cite a source with multiple authors and editions in APA style?

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:

Narrative

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.

How do I cite a source that has multiple authors with the same last names and initials in APA style?

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: