United States. Bureau of the Budget and United States. Office of Management and Budget. "The Budget Message of the President," in United States. Bureau of the Budget and United States. Office of Management and Budget. "Fiscal Year 2019 : Efficient, Effective, Accountable: An American Budget," Budget of the United States Government (February 12, 2018) : 5-7. https://fraser.stlouisfed.org/title/54/item/577370/toc/526848 , accessed on April 23, 2024.