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..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)United States Geological Exploration of the Fortieth Parallel و 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.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)United States Geological Exploration of the Fortieth Parallel و 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.