Whitaker, Stephan. "Regional Activity : Educational Attainment Trends in the Fourth District," in Federal Reserve Bank of Cleveland. "Economic Trends - February 2011," Economic Trends (Federal Reserve Bank of Cleveland) (February 2011) : 16-18. https://fraser.stlouisfed.org/title/3952/item/493089/toc/505404 , accessed on May 3, 2024.