APA (7th ed.) Citation

Hitchcock, A. S. (1920). Revisions of North American grasses: Isachne, Oplismenus, Echinochloa, and Chaetochloa. Government Printing Office.

Chicago Style (17th ed.) Citation

Hitchcock, A. S. Revisions of North American Grasses: Isachne, Oplismenus, Echinochloa, and Chaetochloa. Washington, D.C.: Government Printing Office, 1920.

MLA (9th ed.) Citation

Hitchcock, A. S. Revisions of North American Grasses: Isachne, Oplismenus, Echinochloa, and Chaetochloa. Government Printing Office, 1920.

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