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..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited States Geological Exploration of the Fortieth Parallel और 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.
एमएलए (8वां संस्करण) प्रशस्ति पत्रUnited States Geological Exploration of the Fortieth Parallel और 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.