APA (7th ed.) Citation

United States. Soil Conservation Service. (1938). To hold this soil. [s.n.].

Chicago Style (17th ed.) Citation

United States. Soil Conservation Service. To Hold This Soil. [Washington]: [s.n.], 1938.

MLA (9th ed.) Citation

United States. Soil Conservation Service. To Hold This Soil. [s.n.], 1938.