APA (7th ed.) Citation

U.S. Fish and Wildlife Service. (2008). Field guide 101. [U.S. Fish and Wildlife Service].

Chicago Style (17th ed.) Citation

U.S. Fish and Wildlife Service. Field Guide 101. [Washington, D.C.]: [U.S. Fish and Wildlife Service], 2008.

MLA (9th ed.) Citation

U.S. Fish and Wildlife Service. Field Guide 101. [U.S. Fish and Wildlife Service], 2008.

Warning: These citations may not always be 100% accurate.