APA (7th ed.) Citation

(1920). Revisions of North American grasses: Isachne, Oplismenus, Echinochloa, and Chaetochloa. GPO.

Chicago Style (17th ed.) Citation

Revisions of North American Grasses: Isachne, Oplismenus, Echinochloa, and Chaetochloa. [Washington]: GPO, 1920.

MLA (9th ed.) Citation

Revisions of North American Grasses: Isachne, Oplismenus, Echinochloa, and Chaetochloa. GPO, 1920.

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