United States. Department of Commerce and United States. Bureau of Economic Analysis. "Revised Second Quarter 1974," The National Income and Product Account (1974-08-01). https://fraser.stlouisfed.org/title/52/item/56908, accessed on May 13, 2024.
United States. Department of Commerce and United States. Bureau of Economic Analysis. "Revised Second Quarter 1974," The National Income and Product Account (1974-08-01). https://fraser.stlouisfed.org/title/52/item/56908, accessed on May 13, 2024.