APA (7th ed.) Zitazioa
Jefferson, T. A., Webber, M. A., Pitman, R. L., & Jarrett, B. (2008). Marine mammals of the world: A comprehensive guide to their identification. Elsevier.
Chicago Style (17th ed.) Zitazioa
Jefferson, Thomas A., Marc A. Webber, Robert L. Pitman, eta Brett Jarrett. Marine Mammals of the World: A Comprehensive Guide to Their Identification. Amsterdam: Elsevier, 2008.
MLA (9th ed.) Zitazioa
Jefferson, Thomas A., et al. Marine Mammals of the World: A Comprehensive Guide to Their Identification. Elsevier, 2008.
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