United States. Bureau of Economic Analysis. "Gross Domestic Product: Third Quarter 2013 (Second Estimate) | Corporate Profits: Third Quarter 2013 (Preliminary Estimate), BEA 13-57,"
Bureau of Economic Analysis (BEA) News Releases
(December 5, 2013).
https://fraser.stlouisfed.org/title/6148/item/601580, accessed on June 13, 2025.