Meyer, Brent. "Economic Activity : Real GDP: Fourth-Quarter 2008 Advance Estimate," in Federal Reserve Bank of Cleveland. "Economic Trends - February 2009," Economic Trends (Federal Reserve Bank of Cleveland) (February 2009) : 22-24. https://fraser.stlouisfed.org/title/3952/item/493064/toc/505199 , accessed on May 3, 2024.