APA (7th ed.) Citation

United States. Soil Conservation Service. (1940). Soil conservation, official organ of the Soil Conservation Service, Apr. 1940. [s.n.].

Chicago Style (17th ed.) Citation

United States. Soil Conservation Service. Soil Conservation, Official Organ of the Soil Conservation Service, Apr. 1940. [Washington]: [s.n.], 1940.

MLA (9th ed.) Citation

United States. Soil Conservation Service. Soil Conservation, Official Organ of the Soil Conservation Service, Apr. 1940. [s.n.], 1940.