Transportation Research Board. (1982). Traffic control devices and traffic signal systems. Transportation Research Board.
Citación estilo ChicagoTransportation Research Board. Traffic Control Devices and Traffic Signal Systems. Washington, D.C: Transportation Research Board, 1982.
Cita MLATransportation Research Board. Traffic Control Devices and Traffic Signal Systems. Transportation Research Board, 1982.
Warning: These citations may not always be 100% accurate.