United States. Bureau of the Budget and United States. Office of Management and Budget. "Composition of Budget Outlays in Current and Constant Prices," in United States. Bureau of the Budget and United States. Office of Management and Budget. "Fiscal Year 1987," Budget of the United States Government (February 5, 1986) : 620-621. https://fraser.stlouisfed.org/title/54/item/18993/toc/338509 , accessed on April 18, 2024.