United States. Bureau of Economic Analysis. "2009 Decline Widespread Across Industries : Full Release : Advance GDP by Industry Statistics for 2009 and Revised Statistics for 1998-2008, BEA 10-21,"
Bureau of Economic Analysis (BEA) News Releases
(May 25, 2010).
https://fraser.stlouisfed.org/title/6148/item/601153/content/pdf/bea_newsreleases_20100525, accessed on June 24, 2025.