APA引文

United States. Bureau of the Census & United States. National Archives and Records Administration. (2002). 15th census, population, 1930. National Archives and Records Administration.

Chicago Style (17th ed.) Citation

United States. Bureau of the Census and United States. National Archives and Records Administration. 15th Census, Population, 1930. [Washington, D.C.: National Archives and Records Administration, 2002.

MLA引文

United States. Bureau of the Census and United States. National Archives and Records Administration. 15th Census, Population, 1930. National Archives and Records Administration, 2002.