United States. Department of Agriculture. Economic Research Service. County-level population data for Oklahoma. Economic Research Service, USDA.
Chicago Style (17th ed.) CitationUnited States. Department of Agriculture. Economic Research Service. County-level Population Data for Oklahoma. Washington, D.C.: Economic Research Service, USDA.
MLA (9th ed.) CitationUnited States. Department of Agriculture. Economic Research Service. County-level Population Data for Oklahoma. Economic Research Service, USDA.
Warning: These citations may not always be 100% accurate.