O'Brien, R. A., & Conner, R. C. (1991). Forest statistics for land outside national forests in eastern Montana, 1989. Intermountain Research Station.
Style de citation Chicago (17e éd.)O'Brien, Renee A., et Roger C. Conner. Forest Statistics for Land Outside National Forests in Eastern Montana, 1989. Ogden: Intermountain Research Station, 1991.
Style de citation MLA (9e éd.)O'Brien, Renee A., et Roger C. Conner. Forest Statistics for Land Outside National Forests in Eastern Montana, 1989. Intermountain Research Station, 1991.
Attention : ces citations peuvent ne pas être correctes à 100%.