United States. Bureau of Economic Analysis. "First Quarter 1976 : Corporate Profits, Revised Gross National Product (GNP), Revised Gross Domestic Product (GDP), BEA 76-36," Bureau of Economic Analysis (BEA) News Releases (May 20, 1976). https://fraser.stlouisfed.org/title/6148/item/595556, accessed on August 16, 2024.