Franklin

MLA

Congressional Districts of the United States. Washington, D.C.: U.S. Dept. of Commerce, Bureau of the Census, Data User Services Division, 1993.

APA

(1993). Congressional districts of the United States. Washington, D.C.: U.S. Dept. of Commerce, Bureau of the Census, Data User Services Division.

Chicago

Congressional Districts of the United States. , Summary Tape File 1D. Summary Tape File 3D. Washington, D.C.: U.S. Dept. of Commerce, Bureau of the Census, Data User Services Division, 1993.