United States. Bureau of the Budget and United States. Office of Management and Budget. "Federal Transactions in the National Income and Product Accounts," in United States. Bureau of the Budget and United States. Office of Management and Budget. "Fiscal Year 1991," Budget of the United States Government (January 29, 1990) : 83-84. https://fraser.stlouisfed.org/title/54/item/18997/content/pdf/bus_1991_sec2/toc/38887 , accessed on June 29, 2024.