APA (7th ed.) Citation

U.S. Fish and Wildlife Service. (2002). Puerto Rico and the U.S. Virgin Islands national wildlife refuges: Puerto Rico e Islas Virgenes Americanas refugios nacionales de vida silvestre. U.S. Fish and Wildlife Service.

Chicago Style (17th ed.) Citation

U.S. Fish and Wildlife Service. Puerto Rico and the U.S. Virgin Islands National Wildlife Refuges: Puerto Rico E Islas Virgenes Americanas Refugios Nacionales De Vida Silvestre. [Washington, D.C.]: U.S. Fish and Wildlife Service, 2002.

MLA (9th ed.) Citation

U.S. Fish and Wildlife Service. Puerto Rico and the U.S. Virgin Islands National Wildlife Refuges: Puerto Rico E Islas Virgenes Americanas Refugios Nacionales De Vida Silvestre. U.S. Fish and Wildlife Service, 2002.