United States. Bureau of the Census. (1988). Estimates of the population of Arizona counties and metropolitan areas, July 1, 1981 to 1985. U.S. Dept. of Commerce, Bureau of the Census.
Chicago Style (17th ed.) CitationUnited States. Bureau of the Census. Estimates of the Population of Arizona Counties and Metropolitan Areas, July 1, 1981 to 1985. [Washington, D.C.]: U.S. Dept. of Commerce, Bureau of the Census, 1988.
MLA (9th ed.) CitationUnited States. Bureau of the Census. Estimates of the Population of Arizona Counties and Metropolitan Areas, July 1, 1981 to 1985. U.S. Dept. of Commerce, Bureau of the Census, 1988.
Warning: These citations may not always be 100% accurate.