United States. Bureau of the Census. (1993). 1990 census of population and housing: Congressional districts of the United States, 103rd Congress on CD-ROM : (summary tape file 1D), (summary tape file 3D) : technical documentation. U.S. Dept. of Commerce, Economics and Statistics Administration, Bureau of the Census.
Chicago Style (17th ed.) CitationUnited States. Bureau of the Census. 1990 Census of Population and Housing: Congressional Districts of the United States, 103rd Congress on CD-ROM : (summary Tape File 1D), (summary Tape File 3D) : Technical Documentation. Washington, DC: U.S. Dept. of Commerce, Economics and Statistics Administration, Bureau of the Census, 1993.
MLA (8th ed.) CitationUnited States. Bureau of the Census. 1990 Census of Population and Housing: Congressional Districts of the United States, 103rd Congress on CD-ROM : (summary Tape File 1D), (summary Tape File 3D) : Technical Documentation. U.S. Dept. of Commerce, Economics and Statistics Administration, Bureau of the Census, 1993.