United States. Bureau of Economic Analysis. "National Income and Product Accounnts : Preliminary Second Quarter 1984 GNP, Revisions for 1981 - Second Quarter 1984, BEA 84-36," Bureau of Economic Analysis (BEA) News Releases (July 23, 1984). https://fraser.stlouisfed.org/title/6148/item/596353, accessed on March 18, 2025.