Cita APA (7th ed.)

National Research Council (U.S.). Transportation Research Board. Committee on Traffic Control Devices. (1987). Testing motorist understanding of traffic control devices. Transportation Research Board, National Research Council.

Cita Chicago (17th ed.)

National Research Council (U.S.). Transportation Research Board. Committee on Traffic Control Devices. Testing Motorist Understanding of Traffic Control Devices. Washington, D.C: Transportation Research Board, National Research Council, 1987.

Cita MLA (9th ed.)

National Research Council (U.S.). Transportation Research Board. Committee on Traffic Control Devices. Testing Motorist Understanding of Traffic Control Devices. Transportation Research Board, National Research Council, 1987.

Atenció: Aquestes cites poden no estar 100% correctes.