APA (7th ed.) Citation

United States. Bureau of the Census. Geography Division & United States. Bureau of the Census. (2010). Congressional districts of the 112th Congress of the United States, January 2011-2013. U.S. Dept. of Commerce, Bureau of the Census.

Chicago Style (17th ed.) Citation

United States. Bureau of the Census. Geography Division and United States. Bureau of the Census. Congressional Districts of the 112th Congress of the United States, January 2011-2013. [Washington, D.C.]: U.S. Dept. of Commerce, Bureau of the Census, 2010.

MLA (9th ed.) Citation

United States. Bureau of the Census. Geography Division and United States. Bureau of the Census. Congressional Districts of the 112th Congress of the United States, January 2011-2013. U.S. Dept. of Commerce, Bureau of the Census, 2010.