APA (7th ed.) Citation

Hitchcock, A. S. (1935). Manual of the grasses of the United States. U.S. Govt. print. off.

Chicago Style (17th ed.) Citation

Hitchcock, A. S. Manual of the Grasses of the United States. Washington: U.S. Govt. print. off, 1935.

MLA (9th ed.) Citation

Hitchcock, A. S. Manual of the Grasses of the United States. U.S. Govt. print. off, 1935.