(1960). Effects of traffic control devices: Presented at the 38th Annual Meeting January 5-9, 1959. Highway Research Board.
Chicago-Zitierstil (17. Ausg.)Effects of Traffic Control Devices: Presented at the 38th Annual Meeting January 5-9, 1959. Washington, D.C: Highway Research Board, 1960.
MLA-Zitierstil (9. Ausg.)Effects of Traffic Control Devices: Presented at the 38th Annual Meeting January 5-9, 1959. Highway Research Board, 1960.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.