APA (7th ed.) Citation
(1991). Statistical Abstract of the United States 1991: <The> National Data Book (111. ed.). U.S. Department of Commerce.
Chicago Style (17th ed.) Citation
Statistical Abstract of the United States 1991: <The> National Data Book. 111. ed. Washington: U.S. Department of Commerce, 1991.
MLA (9th ed.) Citation
Statistical Abstract of the United States 1991: <The> National Data Book. 111. ed. U.S. Department of Commerce, 1991.
Warning: These citations may not always be 100% accurate.