Style de citation APA (7e éd.)

Barrett, K., Peters, S., Ruemmler, J. D., McBride, A., Savoy, C., Forton, G., & Tolkien, J. R. R. (1988). Treason at Helms Deep. Berkley Pub. Group.

Style de citation Chicago (17e éd.)

Barrett, Kevin, Saul Peters, John David Ruemmler, Angus McBride, Carolyn Savoy, Gerald Forton, et J. R. R. Tolkien. Treason at Helms Deep. New York, N.Y.: Berkley Pub. Group, 1988.

Style de citation MLA (8e éd.)

Barrett, Kevin, et al. Treason at Helms Deep. Berkley Pub. Group, 1988.