Board, N. R. C. T. R. (1992). Traffic control devices and highway visibility. Washington, DC : National Academy Press.
Chicago Style (17th ed.) CitationBoard, National Research Council. Transportation Research. Traffic Control Devices and Highway Visibility. Washington, DC : National Academy Press, 1992.
MLA citiranjeBoard, National Research Council. Transportation Research. Traffic Control Devices and Highway Visibility. Washington, DC : National Academy Press, 1992.
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