United States. Bureau of Economic Analysis. "Gross Domestic Product: First Quarter 2009 (Final)|Corporate Profits: First Quarter 2009 (Revised), BEA 09-29,"
Bureau of Economic Analysis (BEA) News Releases
(June 25, 2009).
https://fraser.stlouisfed.org/title/6148/item/600678, accessed on December 8, 2025.