United States. Bureau of Economic Analysis. "Gross Domestic Product: Fourth Quarter 2009 (Second Estimate) : Highlights: GDP Rises in the Fourth Quarter, BEA 10-05,"
Bureau of Economic Analysis (BEA) News Releases
(February 26, 2010).
https://fraser.stlouisfed.org/title/6148/item/601137/content/pdf/bea_newsreleases_20100226_release-highlights, accessed on June 21, 2025.