APA (7th ed.) Citation

United States. Bureau of Plant Industry. (1938). Changes in weedy plant cover on cleared sagebrush land and their probable causes. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Plant Industry. Changes in Weedy Plant Cover on Cleared Sagebrush Land and Their Probable Causes. [Washington]: [s.n.], 1938.

MLA (9th ed.) Citation

United States. Bureau of Plant Industry. Changes in Weedy Plant Cover on Cleared Sagebrush Land and Their Probable Causes. [s.n.], 1938.