United States. Bureau of the Budget and United States. Office of Management and Budget. "Federal Finances and the Gross National Product," in United States. Bureau of the Budget and United States. Office of Management and Budget. "Fiscal Year 1978," Budget of the United States Government (January 17, 1977) : 444-444. https://fraser.stlouisfed.org/title/54/item/19032/toc/362889 , accessed on April 19, 2024.