Federal Writers' Project. (1939). The Oregon trail: The Missouri river to the Pacific ocean. Hastings house.
Chicago Style (17th ed.) CitationFederal Writers' Project. The Oregon Trail: The Missouri River to the Pacific Ocean. New York: Hastings house, 1939.
MLA (9th ed.) CitationFederal Writers' Project. The Oregon Trail: The Missouri River to the Pacific Ocean. Hastings house, 1939.
Warning: These citations may not always be 100% accurate.