Cita APA (7a ed.)

Allen, S. G., Mortenson, J., & Webb, S. (2011). Field guide to marine mammals of the Pacific Coast: Baja, California, Oregon, Washington, British Columbia. University of California Press.

Cita Chicago Style (17a ed.)

Allen, Sarah G., Joseph Mortenson, y Sophie Webb. Field Guide to Marine Mammals of the Pacific Coast: Baja, California, Oregon, Washington, British Columbia. Berkeley: University of California Press, 2011.

Cita MLA (8a ed.)

Allen, Sarah G., et al. Field Guide to Marine Mammals of the Pacific Coast: Baja, California, Oregon, Washington, British Columbia. University of California Press, 2011.