United States. Bureau of Economic Analysis. "Gross Domestic Product: First Quarter 2007 (Preliminary)|Corporate Profits: First Quarter 2007 (Preliminary) : Highlights: GDP Grew 0.6 Percent in the First Quarter, BEA 07-21," Bureau of Economic Analysis (BEA) News Releases (May 31, 2007). https://fraser.stlouisfed.org/title/6148/item/598962/content/pdf/bea_newsreleases_20070531_highlights, accessed on March 17, 2025.