United States. Bureau of Economic Analysis. "Gross Domestic Product: Third Quarter 2009 (Third Estimate)|Corporate Profits: Third Quarter 2009 (Revised Estimate), BEA 09-57," Bureau of Economic Analysis (BEA) News Releases (December 22, 2009). https://fraser.stlouisfed.org/title/6148/item/600705, accessed on March 18, 2025.