U.S. Census Bureau & United States. National Archives and Records Administration. (2002). 15th census, population, 1930. National Archives and Records Administration.
Lua i Stíl Chicago (17ú heag.)U.S. Census Bureau agus United States. National Archives and Records Administration. 15th Census, Population, 1930. [Washington, D.C.: National Archives and Records Administration, 2002.
Lua MLA (8ú heag.)U.S. Census Bureau agus United States. National Archives and Records Administration. 15th Census, Population, 1930. National Archives and Records Administration, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.