APA (7th ed.) Citation

Gardner, D. R. (1998). The National Cooperative Soil Survey of the United States. U.S. Dept. of Agriculture, Natural Resources Conservation Service, Resource Economics and Social Science Division : Soil Survey Division.

Chicago Style (17th ed.) Citation

Gardner, David Rice. The National Cooperative Soil Survey of the United States. [Washington, D.C.?]: U.S. Dept. of Agriculture, Natural Resources Conservation Service, Resource Economics and Social Science Division : Soil Survey Division, 1998.

MLA (9th ed.) Citation

Gardner, David Rice. The National Cooperative Soil Survey of the United States. U.S. Dept. of Agriculture, Natural Resources Conservation Service, Resource Economics and Social Science Division : Soil Survey Division, 1998.