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.
Style de citation Chicago (17e éd.)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, et 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.
Style de citation MLA (9e éd.)National Research Council (U.S.). Highway Research Board, et al. Route Guidance: 5 Reports. Highway Research Board, National Research Council, 1968.