United States. Bureau of Economic Analysis. "Gross Domestic Product: First Quarter 2017 (Second Estimate) | Corporate Profits: First Quarter 2017 (Preliminary Estimate), BEA 17-23,"
Bureau of Economic Analysis (BEA) News Releases
(May 26, 2017).
https://fraser.stlouisfed.org/title/6148/item/602494, accessed on March 23, 2025.