United States. Census Office. 6th Census, 1840, & United States. National Archives and Records Service. (1973). Schedule of mines, agriculture, commerce, manufactures, etc. of 1840 census for ... Louisiana. National Archives.
Chicago Style (17th ed.) CitationUnited States. Census Office. 6th Census, 1840, and United States. National Archives and Records Service. Schedule of Mines, Agriculture, Commerce, Manufactures, Etc. of 1840 Census for ... Louisiana. Washington, D.C.: National Archives, 1973.
MLA引文United States. Census Office. 6th Census, 1840, and United States. National Archives and Records Service. Schedule of Mines, Agriculture, Commerce, Manufactures, Etc. of 1840 Census for ... Louisiana. National Archives, 1973.
警告：这些引文格式不一定是100％准确.