APA (7th ed.) Citation

United States. Soil Conservation Service. (1941). Soils and security [soil conservation]. [s.n.].

Chicago Style (17th ed.) Citation

United States. Soil Conservation Service. Soils and Security [soil Conservation]. [Washington]: [s.n.], 1941.

MLA (9th ed.) Citation

United States. Soil Conservation Service. Soils and Security [soil Conservation]. [s.n.], 1941.

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