APA-referens (7:e uppl.)

Gilbert, P. W. (1967). Sharks, skates, and rays. Johns Hopkins University Press.

Chicago-referens (17:e uppl.)

Gilbert, Perry W. Sharks, Skates, and Rays. Baltimore: Johns Hopkins University Press, 1967.

MLA-referens (9:e uppl.)

Gilbert, Perry W. Sharks, Skates, and Rays. Johns Hopkins University Press, 1967.