Parsonson, P. S., Kay, J. L., & Tarnoff, P. J. (1980). Selection of traffic signal control and timing at individual intersections. ITE Educational Foundation.
Cita Chicago (17th ed.)Parsonson, Peter S., Jack L. Kay, i Philip J. Tarnoff. Selection of Traffic Signal Control and Timing at Individual Intersections. Pittsburgh: ITE Educational Foundation, 1980.
Cita MLA (9th ed.)Parsonson, Peter S., et al. Selection of Traffic Signal Control and Timing at Individual Intersections. ITE Educational Foundation, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.