(1972). The changeable-message concept of traffic control: Report of a conference held July 15 - 16, 1971.
Chicago-Zitierstil (17. Ausg.)The Changeable-message Concept of Traffic Control: Report of a Conference Held July 15 - 16, 1971. Washington, DC, 1972.
MLA-Zitierstil (9. Ausg.)The Changeable-message Concept of Traffic Control: Report of a Conference Held July 15 - 16, 1971. 1972.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.