United States. Department of Commerce and United States. Bureau of Economic Analysis. "Third Quarter1964," The National Income and Product Account (1964-12-01). https://fraser.stlouisfed.org/title/52/item/57002, accessed on May 4, 2024.
United States. Department of Commerce and United States. Bureau of Economic Analysis. "Third Quarter1964," The National Income and Product Account (1964-12-01). https://fraser.stlouisfed.org/title/52/item/57002, accessed on May 4, 2024.