United States. Bureau of the Census & United States. National Archives and Records Administration. (2002). 15th census, population, 1930. National Archives and Records Administration.
Lua i Stíl Chicago (17ú heag.)United States. Bureau of the Census 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.)United States. Bureau of the Census 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.