APA aipamena

Gale Group, Perrin, W. F., Wursig, B. G., & Thewissen, J. G. M. (2002). Encyclopedia of marine mammals. Academic Press.

Chicago Style aipamena

Gale Group, William F. Perrin, Bernd G. Wursig, and J. G. M. Thewissen. Encyclopedia of Marine Mammals. San Diego, Calif: Academic Press, 2002.

MLA aipamena

Gale Group, et al. Encyclopedia of Marine Mammals. Academic Press, 2002.