APA (7th ed.) Zitazioa

Transportation Research Board. (1982). Traffic control devices and traffic signal systems. Transportation Research Board.

Chicago Style (17th ed.) Zitazioa

Transportation Research Board. Traffic Control Devices and Traffic Signal Systems. Washington, D.C: Transportation Research Board, 1982.

MLA (9th ed.) Zitazioa

Transportation Research Board. Traffic Control Devices and Traffic Signal Systems. Transportation Research Board, 1982.