United States. Census Office. 6th Census, 1840, & United States. National Archives and Records Service. (1974). 1840 Census schedules of mines, agriculture, commerce, and manufacturing for Massachusetts. National Archives.
Style de citation Chicago (17e éd.)United States. Census Office. 6th Census, 1840, et United States. National Archives and Records Service. 1840 Census Schedules of Mines, Agriculture, Commerce, and Manufacturing for Massachusetts. Washington, D.C.: National Archives, 1974.
Style de citation MLA (8e éd.)United States. Census Office. 6th Census, 1840, et United States. National Archives and Records Service. 1840 Census Schedules of Mines, Agriculture, Commerce, and Manufacturing for Massachusetts. National Archives, 1974.
Attention : ces citations peuvent ne pas être correctes à 100%.