1990 census of population. Characteristics of the Black population
MLA
1990 Census of Population. Washington, DC: U.S. Dept. of Commerce, Economics and Statistics Administration, Bureau of the Census , 1994
APA, 7th edition
(1994). 1990 census of population. Washington, DC: U.S. Dept. of Commerce, Economics and Statistics Administration, Bureau of the Census
Chicago, 17th edition
1990 census of population. Washington, DC: U.S. Dept. of Commerce, Economics and Statistics Administration, Bureau of the Census , 1994