Cite
MLA (8th Edition)
Congressional Districts of the 112th Congress of the United States, January 2011-2013. U.S. Dept. of Commerce, Bureau of the Census, 2010.
APA (7th Edition)
Congressional districts of the 112th Congress of the United States, January 2011-2013. (2010). U.S. Dept. of Commerce, Bureau of the Census.
Chicago (17th Edition)
“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.