APA (7th ed.) Citation

United States. Soil Conservation Service. (1937). Conserving Corn Belt soil. [s.n.].

Chicago Style (17th ed.) Citation

United States. Soil Conservation Service. Conserving Corn Belt Soil. [Washington]: [s.n.], 1937.

MLA (9th ed.) Citation

United States. Soil Conservation Service. Conserving Corn Belt Soil. [s.n.], 1937.

Warning: These citations may not always be 100% accurate.