Mitchell, C. G. B. (1973). Pedestrian and cycle journeys in English urban areas. Transport and Road Research Laboratory, Transport Systems Dept., Advanced Systems Division.
Cita Chicago (17th ed.)Mitchell, C. G. B. Pedestrian and Cycle Journeys in English Urban Areas. Crowthorne, England: Transport and Road Research Laboratory, Transport Systems Dept., Advanced Systems Division, 1973.
Cita MLA (8th ed.)Mitchell, C. G. B. Pedestrian and Cycle Journeys in English Urban Areas. Transport and Road Research Laboratory, Transport Systems Dept., Advanced Systems Division, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.