W�ursig, B. G., Thewissen, J. G. M., & Kovacs, K. M. (2018). Encyclopedia of marine mammals: Edited by Bernd W�ursig, Texas A&M University at Galveston, Galveston, TX, United States, J.G.M. Thewissen, Northeast Ohio Medical University, Rootstown, OH, United States, Kit M. Kovacs, Norwegian Polar Institute, Troms�, Norway and University Studies on Svalbard (Third edition.). Elsevier Ltd. : Academic Press.
Cita Chicago Style (17a ed.)W�ursig, Bernd G., J. G. M. Thewissen, y Kit M. Kovacs. Encyclopedia of Marine Mammals: Edited by Bernd W�ursig, Texas A&M University at Galveston, Galveston, TX, United States, J.G.M. Thewissen, Northeast Ohio Medical University, Rootstown, OH, United States, Kit M. Kovacs, Norwegian Polar Institute, Troms�, Norway and University Studies on Svalbard. Third edition. London, United Kingdom: Elsevier Ltd. : Academic Press, 2018.
Cita MLA (8a ed.)W�ursig, Bernd G., et al. Encyclopedia of Marine Mammals: Edited by Bernd W�ursig, Texas A&M University at Galveston, Galveston, TX, United States, J.G.M. Thewissen, Northeast Ohio Medical University, Rootstown, OH, United States, Kit M. Kovacs, Norwegian Polar Institute, Troms�, Norway and University Studies on Svalbard. Third edition. Elsevier Ltd. : Academic Press, 2018.