Cox, R. (1957). The Columbia River: Or, Scenes and adventures during a residence of six years on the western side of the Rocky Mountains among various tribes of Indians hitherto unknown; together with a journey across the American Continent. University of Oklahoma Press.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Cox, Ross. The Columbia River: Or, Scenes and Adventures During a Residence of Six Years on the Western Side of the Rocky Mountains Among Various Tribes of Indians Hitherto Unknown; Together with a Journey Across the American Continent. Norman: University of Oklahoma Press, 1957.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Cox, Ross. The Columbia River: Or, Scenes and Adventures During a Residence of Six Years on the Western Side of the Rocky Mountains Among Various Tribes of Indians Hitherto Unknown; Together with a Journey Across the American Continent. University of Oklahoma Press, 1957.