Encountering a source with multiple authors is a common scenario in academic and professional writing, particularly within the social sciences. The American Psychological Association (APA) style provides a specific set of rules to handle these situations, ensuring clarity and consistency. Properly citing a work with three, four, or even twenty authors requires understanding a distinct sequence of names and a specific use of the ampersand. This guide breaks down the exact methodology, moving from simple multi-author groups to complex sources with a large number of contributors.
Understanding the Author Limit in APA 7th Edition
The foundation of citing multiple authors lies in the distinction between "small" and "large" author groups. The 7th edition of the APA Publication Manual introduced a significant change: for any source with 20 or more authors, you list only the first 19 authors, followed by an ellipsis, and then the final author's name. For groups with fewer than 20 authors, you list every single author's name in the reference list. This threshold dictates the structure of your citation and is the first decision point you must make when formatting your references.
Citing Works with Three or Four Authors
When a source has between three and five authors, you must list all the authors the first time the reference appears in your text. For subsequent citations, you use the first author's last name followed by "et al." to signify the remaining contributors. In the reference list, however, you always include all authors for these smaller groups. The format involves listing the last name and initials for each author, separating them with commas, and using an ampersand (&) before the final author's name.
Handling Groups with Five to Twenty Authors
For sources with six to twenty authors, the process is more straightforward but requires attention to punctuation. Unlike the three-to-four-author rule, you do not use "et al." in the text citation; you list all authors the first time and in every subsequent reference. The reference list entry follows a strict serial comma style. You separate each author with a comma, and you place an ampersand (&) immediately before the final author's name, without a preceding comma. This consistent format ensures readability and prevents ambiguity in your bibliography.
