APA (7th ed.) Citation

O'Brien, R. (2002). Arizona's forest resources, 1999. United States Department of Agriculture, Forest Service, Rocky Mountain Research Station.

Chicago Style (17th ed.) Citation

O'Brien, Renee. Arizona's Forest Resources, 1999. Ogden, UT: United States Department of Agriculture, Forest Service, Rocky Mountain Research Station, 2002.

MLA (9th ed.) Citation

O'Brien, Renee. Arizona's Forest Resources, 1999. United States Department of Agriculture, Forest Service, Rocky Mountain Research Station, 2002.