APA引文

National Research Council (U.S.). Highway Research Board. Committee on Communications & National Research Council (U.S.). Highway Research Board. Committee on Motorist Services. (1971). Communications and emergency services: 6 reports. Highway Research Board, National Research Council.

Chicago Style (17th ed.) Citation

National Research Council (U.S.). Highway Research Board. Committee on Communications and National Research Council (U.S.). Highway Research Board. Committee on Motorist Services. Communications and Emergency Services: 6 Reports. Washington, D.C: Highway Research Board, National Research Council, 1971.

MLA引文

National Research Council (U.S.). Highway Research Board. Committee on Communications and National Research Council (U.S.). Highway Research Board. Committee on Motorist Services. Communications and Emergency Services: 6 Reports. Highway Research Board, National Research Council, 1971.