United States. Bureau of Economic Analysis. "National Income and Product Accounts : Second Quarter 1993 (Advance) GDP and Profits | Revised Estimates: 1990 Through First Quarter 1993, BEA 93-38,"
Bureau of Economic Analysis (BEA) News Releases
(August 31, 1993).
https://fraser.stlouisfed.org/title/6148/item/597338, accessed on July 18, 2025.