APA (7th ed.) Citation

United States. Soil Conservation Service. (1983). Water quality field guide. U.S. Dept. of Agriculture, Soil Conservation Service.

Chicago Style (17th ed.) Citation

United States. Soil Conservation Service. Water Quality Field Guide. [Washington, D.C.?]: U.S. Dept. of Agriculture, Soil Conservation Service, 1983.

MLA (9th ed.) Citation

United States. Soil Conservation Service. Water Quality Field Guide. U.S. Dept. of Agriculture, Soil Conservation Service, 1983.