National Research Council (U.S.). Transportation Research Board. (1995). Traffic control devices, visibility and railroad grade crossings. National Academy Press.
Chicago Style (17th ed.) CitationNational Research Council (U.S.). Transportation Research Board. Traffic Control Devices, Visibility and Railroad Grade Crossings. Washington, D.C.: National Academy Press, 1995.
MLA (9th ed.) CitationNational Research Council (U.S.). Transportation Research Board. Traffic Control Devices, Visibility and Railroad Grade Crossings. National Academy Press, 1995.
Warning: These citations may not always be 100% accurate.