United States. Bureau of Economic Analysis. "Gross Domestic Product: First Quarter 1993 (Advance) | Corporate Profits: Fourth Quarter 1992 (Revised), BEA 93-15," Bureau of Economic Analysis (BEA) News Releases (April 29, 1993). https://fraser.stlouisfed.org/title/6148/item/597313, accessed on March 17, 2025.