APA (7th ed.) Citation

Perrin, W. F. (2009). Encyclopedia of marine mammals (2. ed.). Academic Press.

Chicago Style (17th ed.) Citation

Perrin, William F. Encyclopedia of Marine Mammals. 2. ed. Amsterdam [u.a.]: Academic Press, 2009.

MLA (9th ed.) Citation

Perrin, William F. Encyclopedia of Marine Mammals. 2. ed. Academic Press, 2009.