APA (7th ed.) Citation

Illinois. Department of Business and Economic Development. Division of Research and Development & Illinois. Dept. of Business and Economic Development. Division of Research and Development. (1975). Economic profile[s of Illinois counties] ...: Personal income, population, employment, agriculture, minerals, manufacturing, major public facilities. State of Illinois, Dept. of Business and Economic Development.

Chicago Style (17th ed.) Citation

Illinois. Department of Business and Economic Development. Division of Research and Development and Illinois. Dept. of Business and Economic Development. Division of Research and Development. Economic Profile[s of Illinois Counties] ...: Personal Income, Population, Employment, Agriculture, Minerals, Manufacturing, Major Public Facilities. [Springfield?]: State of Illinois, Dept. of Business and Economic Development, 1975.

MLA (8th ed.) Citation

Illinois. Department of Business and Economic Development. Division of Research and Development and Illinois. Dept. of Business and Economic Development. Division of Research and Development. Economic Profile[s of Illinois Counties] ...: Personal Income, Population, Employment, Agriculture, Minerals, Manufacturing, Major Public Facilities. State of Illinois, Dept. of Business and Economic Development, 1975.