APA (7th ed.) Citation

National Research Council (U.S.). Transportation Research Board. Annual Meeting. (1990). Traffic control devices for highways, work zones, and railroad grade crossings. Transportation Research Board, National Research Council.

Chicago Style (17th ed.) Citation

National Research Council (U.S.). Transportation Research Board. Annual Meeting. Traffic Control Devices for Highways, Work Zones, and Railroad Grade Crossings. Washington, D.C.: Transportation Research Board, National Research Council, 1990.

MLA (9th ed.) Citation

National Research Council (U.S.). Transportation Research Board. Annual Meeting. Traffic Control Devices for Highways, Work Zones, and Railroad Grade Crossings. Transportation Research Board, National Research Council, 1990.