APA (7th ed.) Citation

O'Brien, R. A., & Collins, D. C. (1991). Forest statistics for land outside national forests in West-Central Montana, 1989. Intermountain Research Station.

Chicago Style (17th ed.) Citation

O'Brien, Renee A., and Dennis C. Collins. Forest Statistics for Land Outside National Forests in West-Central Montana, 1989. Ogden: Intermountain Research Station, 1991.

MLA (9th ed.) Citation

O'Brien, Renee A., and Dennis C. Collins. Forest Statistics for Land Outside National Forests in West-Central Montana, 1989. Intermountain Research Station, 1991.