APA (7th ed.) Citation

United States. Bureau of Plant Industry. (1940). Production of hops. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Plant Industry. Production of Hops. [Washington]: [s.n.], 1940.

MLA (9th ed.) Citation

United States. Bureau of Plant Industry. Production of Hops. [s.n.], 1940.

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