United States. Bureau of Economic Analysis. "Gross Domestic Product: Third Quarter 2017 (Second Estimate) | Corporate Profits: Third Quarter 2017 (Preliminary Estimate), BEA 17-62,"
Bureau of Economic Analysis (BEA) News Releases
(November 29, 2017).
https://fraser.stlouisfed.org/title/6148/item/602533, accessed on June 21, 2025.