APA (7th ed.) Citation

Smithsonian Institution. (1920). Revisions of North American grasses. GPO.

Chicago Style (17th ed.) Citation

Smithsonian Institution. Revisions of North American Grasses. [Washington]: GPO, 1920.

MLA (9th ed.) Citation

Smithsonian Institution. Revisions of North American Grasses. GPO, 1920.

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