How do I cite a resource with six or more authors in APA Style?
When citing works by six or more authors in text, “cite only the surname of the first author followed by et al. . . . and the year for the first and subsequent citations” (American Psychological Association, 2010, p. 175). For example, (Lastname et al., year, p. X). If you have two works by six or more authors where the citations shorten to the same form, please refer to page 175 in the Publication Manual of the American Psychological Association (American Psychological Association, 2010) for instructions on the proper citation format. Also, please see "How should I present the author(s)'s and/or editor(s)'s names in my reference in APA style?" for information on how to present the authors' names in a reference, and refer to page 198 in the APA manual for an example reference.
For other information regarding citing works by multiple authors, please see "How do I cite a resource by two authors in APA style?" and "How do I cite a resource by three to five authors in APA style?".
American Psychological Association. (2010). Publication manual of the American Psychological Association (6th ed.). Washington, DC: Author.