APA (7th ed.) Citation

U.S. Fish and Wildlife Service. (2008). Patuxent Research Refuge: South tract trail map, National Wildlife Visitor Center. U.S. Fish & Wildlife Service.

Chicago Style (17th ed.) Citation

U.S. Fish and Wildlife Service. Patuxent Research Refuge: South Tract Trail Map, National Wildlife Visitor Center. [Washington, D.C.]: U.S. Fish & Wildlife Service, 2008.

MLA (9th ed.) Citation

U.S. Fish and Wildlife Service. Patuxent Research Refuge: South Tract Trail Map, National Wildlife Visitor Center. U.S. Fish & Wildlife Service, 2008.