United States. Bureau of Economic Analysis. "Gross Domestic Product: Third Quarter 2006 (Final) | Corporate Profits: Third Quarter 2006 (Final) : Technical Note, BEA 06-58,"
Bureau of Economic Analysis (BEA) News Releases
(December 21, 2006).
https://fraser.stlouisfed.org/title/6148/item/598064/content/pdf/bea_newsreleases_20061221_technical-note, accessed on July 20, 2025.