ASHTON, W. D. (1966). Theory of road traffic flow. Methuen.
Cita Chicago (17th ed.)ASHTON, Winefred D. Theory of Road Traffic Flow. London: Methuen, 1966.
Cita MLA (9th ed.)ASHTON, Winefred D. Theory of Road Traffic Flow. Methuen, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.