United States Geological Exploration of the Fortieth Parallel & King, C. (1870). Report of the Geological exploration of the fortieth parallel made by order of the Secretary of War according to the acts of Congress of March 2, 1867, and March 3, 1869: Under the direction of ... A. A. Humphreys, chief of engineers. Govt. Print. Off..
Chicago Style (17th ed.) CitationUnited States Geological Exploration of the Fortieth Parallel and Clarence King. Report of the Geological Exploration of the Fortieth Parallel Made by Order of the Secretary of War According to the Acts of Congress of March 2, 1867, and March 3, 1869: Under the Direction of ... A. A. Humphreys, Chief of Engineers. [Washington: Govt. Print. Off., 1870.
MLA (8th ed.) CitationUnited States Geological Exploration of the Fortieth Parallel and Clarence King. Report of the Geological Exploration of the Fortieth Parallel Made by Order of the Secretary of War According to the Acts of Congress of March 2, 1867, and March 3, 1869: Under the Direction of ... A. A. Humphreys, Chief of Engineers. Govt. Print. Off., 1870.