United States. Bureau of the Census & United States. National Archives and Records Service. (1850). State of Vermont 1850-[1870] agricultural census.
Chicago-referens (17:e uppl.)United States. Bureau of the Census och United States. National Archives and Records Service. State of Vermont 1850-[1870] Agricultural Census. 1850.
MLA-referens (8:e uppl.)United States. Bureau of the Census och United States. National Archives and Records Service. State of Vermont 1850-[1870] Agricultural Census. 1850.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.