APA (7th ed.) Citation

Humphrey, R. R. (1950). Arizona range resources: [a study in range condition]. Agricultural Experiment Station, University of Arizona.

Chicago Style (17th ed.) Citation

Humphrey, Robert R. Arizona Range Resources: [a Study in Range Condition]. Tucson, Ariz.: Agricultural Experiment Station, University of Arizona, 1950.

MLA (9th ed.) Citation

Humphrey, Robert R. Arizona Range Resources: [a Study in Range Condition]. Agricultural Experiment Station, University of Arizona, 1950.