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..
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)United States Geological Exploration of the Fortieth Parallel và 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.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)United States Geological Exploration of the Fortieth Parallel và 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.