United States. Bureau of Economic Analysis. "Gross Domestic Product: Second Quarter 1999 (Final) | Corporate Profits: Second Quarter 1999 (Revised), BEA 99-28,"
Bureau of Economic Analysis (BEA) News Releases
(September 30, 1999).
https://fraser.stlouisfed.org/title/6148/item/597704, accessed on June 21, 2025.