APA (7th ed.) Citation

United States. Bureau of Plant Industry. (1938). Emmer and spelt [variety of wheat]. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Plant Industry. Emmer and Spelt [variety of Wheat]. [Washington]: [s.n.], 1938.

MLA (9th ed.) Citation

United States. Bureau of Plant Industry. Emmer and Spelt [variety of Wheat]. [s.n.], 1938.

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