United States. Bureau of the Budget and United States. Office of Management and Budget. "Federal Transactions in the National Income Accounts," in United States. Bureau of the Budget and United States. Office of Management and Budget. "Fiscal Year 1977," Budget of the United States Government (January 21, 1976) : 372-372. https://fraser.stlouisfed.org/title/54/item/19031/toc/280684 , accessed on May 4, 2024.