Tohutoro APA (7th ed.)

Gibson, J. R. (1985). Farming the frontier: The agricultural opening of the Oregon country, 1786-1846. University of Washington Press.

Tohutoru Kātū Chicago (17th ed.)

Gibson, James R. Farming the Frontier: The Agricultural Opening of the Oregon Country, 1786-1846. Seattle: University of Washington Press, 1985.

Tohutoro MLA (9th ed.)

Gibson, James R. Farming the Frontier: The Agricultural Opening of the Oregon Country, 1786-1846. University of Washington Press, 1985.