National Research Council (U.S.). Highway Research Board, National Research Council (U.S.). Highway Research Board. Meeting, & National Research Council (U.S.). Committee on Operational Effects of Geometrics. (1970). Traffic signals and signs: 5 reports. Highway Research Board.
Citação do estilo Chicago (17ª ed.)National Research Council (U.S.). Highway Research Board, National Research Council (U.S.). Highway Research Board. Meeting, e National Research Council (U.S.). Committee on Operational Effects of Geometrics. Traffic Signals and Signs: 5 Reports. Washington: Highway Research Board, 1970.
Citação MLA (8ª ed.)National Research Council (U.S.). Highway Research Board, et al. Traffic Signals and Signs: 5 Reports. Highway Research Board, 1970.
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