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.
Lua i Stíl Chicago (17ú heag.)United States. National Archives and Records Administration agus National Archives Trust Fund Board. The 1930 Federal Population Census: Catalog of National Archives Microfilm. Washington, D.C.: National Archives Trust Fund Board, 2002.
Lua MLA (8ú heag.)United States. National Archives and Records Administration agus National Archives Trust Fund Board. The 1930 Federal Population Census: Catalog of National Archives Microfilm. National Archives Trust Fund Board, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.