Cite more than seven authors in APA by listing the first six authors with their last name and first initial, then an ellipsis (...) and then the last author's name. Follow that with the date of publication, the title of the work (in italics), the place of publication and the publisher. For example: Smith, E., Lockwood, T., Forbes, C., Gilbert, J., Fell, L., Saltzman, A.,...Bennett, B. (2009). Vampire Stories. New York: Fictional Book Publishers.
Cite in MLA format as the author's last name, first name, book title (in italics), where it was published, the publisher, the year of publication, and the publishing medium (electronic source or print source). You can choose to either write out all seven authors or list the first author and then the phrase "et al." For example: Smith, Elijah, et al. Vampire Stories. Atlanta: Fictional Book Publishers, 2009. Print.
Cite more than seven authors in Chicago Style by putting the last name, then the first name, the book's title (in italics), the publishing location, the publisher and the year it was published. You will list each author except the last one as last name, first name. The last author list as "and first name, last name." For example: Smith, Elijah, Lockwood, Tyler, Forbes, Caroline, Gilbert, Jeremy, Fell, Logan, Saltzman, Alaric and Bonnie Bennett. Vampire Stories. Atlanta: Fictional Book Publishers, 2009.