APA (7th ed.) Citation

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.

Chicago Style (17th ed.) Citation

National Research Council (U.S.). Highway Research Board, National Research Council (U.S.). Highway Research Board. Meeting, and National Research Council (U.S.). Committee on Operational Effects of Geometrics. Traffic Signals and Signs: 5 Reports. Washington: Highway Research Board, 1970.

MLA (8th ed.) Citation

National Research Council (U.S.). Highway Research Board, et al. Traffic Signals and Signs: 5 Reports. Highway Research Board, 1970.