APA (7th ed.) Citation

Hitchcock, A. S. (1935). Manual of the grasses of the United States. Department of Agriculture.

Chicago Style (17th ed.) Citation

Hitchcock, A. S. Manual of the Grasses of the United States. Washington, D.C, USA: Department of Agriculture, 1935.

MLA (9th ed.) Citation

Hitchcock, A. S. Manual of the Grasses of the United States. Department of Agriculture, 1935.