APA (7th ed.) Citation

Humphrey, R. R. (1970). Arizona range grasses: Their description, forage value and management. University of Arizona Press.

Chicago Style (17th ed.) Citation

Humphrey, Robert R. Arizona Range Grasses: Their Description, Forage Value and Management. Tucson: University of Arizona Press, 1970.

MLA (9th ed.) Citation

Humphrey, Robert R. Arizona Range Grasses: Their Description, Forage Value and Management. University of Arizona Press, 1970.