APA (7th ed.) Citation

U.S. Fish and Wildlife Service. (1992). Backyard bird feeding (Rev. Jul. 1990.). [Dept. of the Interior, U.S. Fish and Wildlife Service].

Chicago Style (17th ed.) Citation

U.S. Fish and Wildlife Service. Backyard Bird Feeding. Rev. Jul. 1990. [Washington, D.C.?]: [Dept. of the Interior, U.S. Fish and Wildlife Service], 1992.

MLA (9th ed.) Citation

U.S. Fish and Wildlife Service. Backyard Bird Feeding. Rev. Jul. 1990. [Dept. of the Interior, U.S. Fish and Wildlife Service], 1992.