United States. Bureau of Economic Analysis. "National Income and Product Accounts : Second Quarter 1989 GNP (Advance), Revised Estimates: 1986 Through First Quarter 1989, BEA 89-33," Bureau of Economic Analysis (BEA) News Releases (July 27, 1989). https://fraser.stlouisfed.org/title/6148/item/596924, accessed on August 16, 2024.