(2004). Census of Population and Housing, 2000 [United States] Summary File 4, District of Columbia / United States Department of Commerce. Bureau of the Census. [electronic resource].
Čikaški stil citiranja (17. izdanje)Census of Population and Housing, 2000 [United States] Summary File 4, District of Columbia / United States Department of Commerce. Bureau of the Census. [electronic Resource]. 2004.
MLA način citiranja (9. izdanje)Census of Population and Housing, 2000 [United States] Summary File 4, District of Columbia / United States Department of Commerce. Bureau of the Census. [electronic Resource]. 2004.
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