Jefferson, T. A., Webber, M. A., Pitman, R. L., & Jarrett, B. (2008). Marine mammals of the world: A comprehensive guide to their identification. Elsevier.
Cita Chicago Style (17a ed.)Jefferson, Thomas A., Marc A. Webber, Robert L. Pitman, y Brett Jarrett. Marine Mammals of the World: A Comprehensive Guide to Their Identification. Amsterdam: Elsevier, 2008.
Cita MLA (9a ed.)Jefferson, Thomas A., et al. Marine Mammals of the World: A Comprehensive Guide to Their Identification. Elsevier, 2008.
Precaución: Estas citas no son 100% exactas.