Ferris, W. A., & Phillips, P. C. (1940). Life in the Rocky mountains: A diary of wanderings on the sources of the rivers Missouri, Columbia, and Colorado from February, 1830, to November, 1835. F. A. Rosenstock, The Old West publishing company.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Ferris, Warren Angus, và Paul C. Phillips. Life in the Rocky Mountains: A Diary of Wanderings on the Sources of the Rivers Missouri, Columbia, and Colorado from February, 1830, to November, 1835. Denver, Col.: F. A. Rosenstock, The Old West publishing company, 1940.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Ferris, Warren Angus, và Paul C. Phillips. Life in the Rocky Mountains: A Diary of Wanderings on the Sources of the Rivers Missouri, Columbia, and Colorado from February, 1830, to November, 1835. F. A. Rosenstock, The Old West publishing company, 1940.