APA (7th ed.) Citation

Vidal, O., Findley, L. T., & Leatherwood, S. (1993). Annotated checklist of the marine mammals of the Gulf of California. San Diego Soc. of Natural History.

Chicago Style (17th ed.) Citation

Vidal, Omar, Lloyd T. Findley, and Stephen Leatherwood. Annotated Checklist of the Marine Mammals of the Gulf of California. San Diego, Calif: San Diego Soc. of Natural History, 1993.

MLA (9th ed.) Citation

Vidal, Omar, et al. Annotated Checklist of the Marine Mammals of the Gulf of California. San Diego Soc. of Natural History, 1993.