(1990). Key indicators of county growth: 1970 - 2010 ; households, population, income, employment. NPA Data Services.
Chicago Style (17th ed.) CitationKey Indicators of County Growth: 1970 - 2010 ; Households, Population, Income, Employment. Washington, D.C: NPA Data Services, 1990.
MLA (9th ed.) CitationKey Indicators of County Growth: 1970 - 2010 ; Households, Population, Income, Employment. NPA Data Services, 1990.
Warning: These citations may not always be 100% accurate.