APA Alıntı

Perrin,William F, & Wursig,Bernd Thewissen, J. (2009). Encyclopedia of marine mammals (2nd ed.). Elsevier.

Chicago Stili Alıntı

Perrin,William F, ve J.G.M Wursig,Bernd Thewissen. Encyclopedia of Marine Mammals. 2nd ed. Amsterdam: Elsevier, 2009.

MLA Alıntı

Perrin,William F, ve J.G.M Wursig,Bernd Thewissen. Encyclopedia of Marine Mammals. 2nd ed. Elsevier, 2009.