United States. Bureau of the Census & United States. National Archives and Records Administration. (2002). 15th census, population, 1930. The Bureau.
Chicago-referens (17:e uppl.)United States. Bureau of the Census och United States. National Archives and Records Administration. 15th Census, Population, 1930. [Washington, D.C.]: The Bureau, 2002.
MLA-referens (8:e uppl.)United States. Bureau of the Census och United States. National Archives and Records Administration. 15th Census, Population, 1930. The Bureau, 2002.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.