APA (7. basım) Alıntı

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 (17. basım) Atıf

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

MLA (9th ed.) Atıf

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