APA

Dahl T. E., U.S. Fish and Wildlife Service, . (2000). Status and trends of wetlands in the conterminous United States 1986 to 1997. Washington, D.C: U.S. Dept. of the Interior, U.S. Fish and Wildlife Service.

Chicago

Dahl Thomas E, U.S. Fish and Wildlife Service, . 2000. Status and trends of wetlands in the conterminous United States 1986 to 1997. Washington, D.C: U.S. Dept. of the Interior, U.S. Fish and Wildlife Service.

Harvard

Dahl T. E., U.S. Fish and Wildlife Service, . (2000). Status and trends of wetlands in the conterminous United States 1986 to 1997. Washington, D.C: U.S. Dept. of the Interior, U.S. Fish and Wildlife Service.

MLA

Dahl Thomas E, U.S. Fish and Wildlife Service, . Status and trends of wetlands in the conterminous United States 1986 to 1997. Washington, D.C: U.S. Dept. of the Interior, U.S. Fish and Wildlife Service. 2000.