Langford, N. P. (1923). The discovery of Yellowstone Park, 1870.: The complete story of the Washburn expedition to the headquarters of the Yellowstone and Firehole Rivers in the year 1870. J.E. Haynes.
Chicago Style (17th ed.) CitationLangford, Nathaniel Pitt. The Discovery of Yellowstone Park, 1870.: The Complete Story of the Washburn Expedition to the Headquarters of the Yellowstone and Firehole Rivers in the Year 1870. Saint Paul: J.E. Haynes, 1923.
MLA (9th ed.) CitationLangford, Nathaniel Pitt. The Discovery of Yellowstone Park, 1870.: The Complete Story of the Washburn Expedition to the Headquarters of the Yellowstone and Firehole Rivers in the Year 1870. J.E. Haynes, 1923.
Warning: These citations may not always be 100% accurate.