APA (7th ed.) Citation

United States. Bureau of Plant Industry. (1937). Distribution of varieties and classes of wheat in United States in 1934. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Plant Industry. Distribution of Varieties and Classes of Wheat in United States in 1934. [Washington]: [s.n.], 1937.

MLA (9th ed.) Citation

United States. Bureau of Plant Industry. Distribution of Varieties and Classes of Wheat in United States in 1934. [s.n.], 1937.

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