APA (7th ed.) Citation

Perrin, W. F. (2002). Encyclopedia of marine mammals. Acad. Press.

Chicago Style (17th ed.) Citation

Perrin, William F. Encyclopedia of Marine Mammals. San Diego [u.a.]: Acad. Press, 2002.

MLA (9th ed.) Citation

Perrin, William F. Encyclopedia of Marine Mammals. Acad. Press, 2002.