Lewis, M., Thompson, D., & Grossman, P. (1959). David Thompson and the Lewis and Clark Expedition: An unpublished account of the Lewis and Clark Expedition. Library's Press.
Chicago Style (17th ed.) CitationLewis, Meriwether, David Thompson, and Peter Grossman. David Thompson and the Lewis and Clark Expedition: An Unpublished Account of the Lewis and Clark Expedition. Vancouver, B.C.: Library's Press, 1959.
MLA (8th ed.) CitationLewis, Meriwether, et al. David Thompson and the Lewis and Clark Expedition: An Unpublished Account of the Lewis and Clark Expedition. Library's Press, 1959.
Warning: These citations may not always be 100% accurate.