United States. General Accounting Office. (1997). Transportation infrastructure: States' implementation of transportation management systems : report to congressional committees. The Office.
Chicago-referens (17:e uppl.)United States. General Accounting Office. Transportation Infrastructure: States' Implementation of Transportation Management Systems : Report to Congressional Committees. Washington, D.C.: The Office, 1997.
MLA-referens (8:e uppl.)United States. General Accounting Office. Transportation Infrastructure: States' Implementation of Transportation Management Systems : Report to Congressional Committees. The Office, 1997.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.