United States. War Department. Corps of Engineers. (1877). Report of geological exploration of 40th parallel, made by order of Secretary of War according to Acts of Congress of Mar. 2, 1867 and Mar. 3, 1869. GPO.
Chicago Style (17th ed.) CitationUnited States. War Department. Corps of Engineers. Report of Geological Exploration of 40th Parallel, Made by Order of Secretary of War According to Acts of Congress of Mar. 2, 1867 and Mar. 3, 1869. [Washington]: GPO, 1877.
MLA (9th ed.) CitationUnited States. War Department. Corps of Engineers. Report of Geological Exploration of 40th Parallel, Made by Order of Secretary of War According to Acts of Congress of Mar. 2, 1867 and Mar. 3, 1869. GPO, 1877.
Warning: These citations may not always be 100% accurate.