United States. Bureau of Economic Analysis. "Gross Domestic Product: Second Quarter 2015 (Third Estimate) | Corporate Profits: Second Quarter 2015 (Revised Estimate) : Historical Comparison, BEA 15-45,"
Bureau of Economic Analysis (BEA) News Releases
(September 25, 2015).
https://fraser.stlouisfed.org/title/6148/item/602263/content/pdf/bea_newsreleases_20150925_historical-comparisons, accessed on July 10, 2025.