United States. Bureau of Economic Analysis. "Gross Domestic Product: Third Quarter 2017 (Third Estimate) | Corporate Profits: Third Quarter 2017 (Revised Estimate), BEA 17-69,"
Bureau of Economic Analysis (BEA) News Releases
(December 21, 2017).
https://fraser.stlouisfed.org/title/6148/item/602540, accessed on July 7, 2025.