United States. Bureau of Economic Analysis. "Gross Domestic Product, Third Quarter 2007 (Advance) : Highlights: GDP Grows 3.9 Percent in Third Quarter, BEA 07-50," Bureau of Economic Analysis (BEA) News Releases (October 31, 2007). https://fraser.stlouisfed.org/title/6148/item/598990/content/pdf/bea_newsreleases_20071031_highlights, accessed on July 8, 2025.