United States. Bureau of the Budget and United States. Office of Management and Budget. "Fiscal Year 1981," Budget of the United States Government (January 28, 1980). https://fraser.stlouisfed.org/title/54/item/19035, accessed on March 13, 2024.
United States. Bureau of the Budget and United States. Office of Management and Budget. "Fiscal Year 1981," Budget of the United States Government (January 28, 1980). https://fraser.stlouisfed.org/title/54/item/19035, accessed on March 13, 2024.