National Research Council (U.S.). Highway Research Board, National Research Council (U.S.). Highway Research Board. Special Committee on Electronic Research in the Highway Field, & National Research Council (U.S.). Highway Research Board. Committee on Traffic Control Devices. (1968). Route guidance: 5 reports. Highway Research Board, National Research Council.
芝加哥风格引文National Research Council (U.S.). Highway Research Board, National Research Council (U.S.). Highway Research Board. Special Committee on Electronic Research in the Highway Field, 与 National Research Council (U.S.). Highway Research Board. Committee on Traffic Control Devices. Route Guidance: 5 Reports. Washington, D.C: Highway Research Board, National Research Council, 1968.
MLA引文National Research Council (U.S.). Highway Research Board, et al. Route Guidance: 5 Reports. Highway Research Board, National Research Council, 1968.