United States. National Archives and Records Administration & National Archives Trust Fund Board. (2002). The 1930 federal population census: Catalog of National Archives microfilm. National Archives Trust Fund Board.
Chicago-referens (17:e uppl.)United States. National Archives and Records Administration och National Archives Trust Fund Board. The 1930 Federal Population Census: Catalog of National Archives Microfilm. Washington, D.C.: National Archives Trust Fund Board, 2002.
MLA-referens (8:e uppl.)United States. National Archives and Records Administration och National Archives Trust Fund Board. The 1930 Federal Population Census: Catalog of National Archives Microfilm. National Archives Trust Fund Board, 2002.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.