APA (7th ed.) Citation

United States. Bureau of Plant Industry. (1938). Descriptions of types of principal American varieties of spinach. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Plant Industry. Descriptions of Types of Principal American Varieties of Spinach. [Washington]: [s.n.], 1938.

MLA (9th ed.) Citation

United States. Bureau of Plant Industry. Descriptions of Types of Principal American Varieties of Spinach. [s.n.], 1938.

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