United States. Bureau of the Budget
and United States. Office of Management and Budget. "Fiscal Year 1997 : Department of Transportation,"
Budget of the United States Government - Appendix
(February 5, 1996).
https://fraser.stlouisfed.org/title/233/item/5751/content/pdf/BUDGET-1997-APP-1-16, accessed on September 1, 2024.