APA (7th ed.) Citation

U.S. Fish and Wildlife Service & Geological Survey (U.S.). (1983). Lower Mississippi Valley ecological inventory. The Service.

Chicago Style (17th ed.) Citation

U.S. Fish and Wildlife Service and Geological Survey (U.S.). Lower Mississippi Valley Ecological Inventory. [Washington, D.C.?]: The Service, 1983.

MLA (9th ed.) Citation

U.S. Fish and Wildlife Service and Geological Survey (U.S.). Lower Mississippi Valley Ecological Inventory. The Service, 1983.