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.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFerris, Warren Angus, और 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.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFerris, Warren Angus, और 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.