Tohutoro APA (7th ed.)

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

Tohutoru Kātū Chicago (17th ed.)

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

Tohutoro MLA (9th ed.)

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