Wheeler, O. D., & Dellenbaugh, F. S. (1926). The trail of Lewis and Clark, 1804-1904: A story of the great exploration across the continent in 1804-6 : with a description of the old trail, based upon actual travel over it, and of the changes found a century later (New ed.). Putnam.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Wheeler, Olin D., và Frederick Samuel Dellenbaugh. The Trail of Lewis and Clark, 1804-1904: A Story of the Great Exploration Across the Continent in 1804-6 : With a Description of the Old Trail, Based upon Actual Travel over It, and of the Changes Found a Century Later. New ed. New York: Putnam, 1926.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Wheeler, Olin D., và Frederick Samuel Dellenbaugh. The Trail of Lewis and Clark, 1804-1904: A Story of the Great Exploration Across the Continent in 1804-6 : With a Description of the Old Trail, Based upon Actual Travel over It, and of the Changes Found a Century Later. New ed. Putnam, 1926.