APA (7th ed.) Citation

U.S. Fish and Wildlife Service. Region 7. Marine Mammals Management & Gilbert, J. R. (1992). Aerial census of Pacific walrus, 1990. Marine Mammals Management, U.S. Fish and Wildlife Service, Region 7.

Chicago Style (17th ed.) Citation

U.S. Fish and Wildlife Service. Region 7. Marine Mammals Management and J. R. Gilbert. Aerial Census of Pacific Walrus, 1990. Anchorage, AK (1011 E. Tudor Rd., Anchorage 99508): Marine Mammals Management, U.S. Fish and Wildlife Service, Region 7, 1992.

MLA (9th ed.) Citation

U.S. Fish and Wildlife Service. Region 7. Marine Mammals Management and J. R. Gilbert. Aerial Census of Pacific Walrus, 1990. Marine Mammals Management, U.S. Fish and Wildlife Service, Region 7, 1992.