APA (7th ed.) Citation

U.S. Fish and Wildlife Service. (1999). Turnbull National Wildlife Refuge: Birds of Turnbull. U.S. Fish and Wildlife Service.

Chicago Style (17th ed.) Citation

U.S. Fish and Wildlife Service. Turnbull National Wildlife Refuge: Birds of Turnbull. [Washington, D.C.?]: U.S. Fish and Wildlife Service, 1999.

MLA (9th ed.) Citation

U.S. Fish and Wildlife Service. Turnbull National Wildlife Refuge: Birds of Turnbull. U.S. Fish and Wildlife Service, 1999.