APA (7th ed.) Citation

United States. Bureau of Plant Industry. (1935). Drug plants under cultivation. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Plant Industry. Drug Plants Under Cultivation. [Washington]: [s.n.], 1935.

MLA (9th ed.) Citation

United States. Bureau of Plant Industry. Drug Plants Under Cultivation. [s.n.], 1935.

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