(1972). Selected proceedings of a Conference on Methods and Concepts of Forecasting Travel Demand for Future Transportation Systems: Held on July 17-18, 1969. Philadelphia: Transportation Studies Center, Center for Urban Research and Experiment.
Παραπομπή Chicago StyleSelected Proceedings of a Conference On Methods and Concepts of Forecasting Travel Demand for Future Transportation Systems: Held On July 17-18, 1969. Philadelphia: Transportation Studies Center, Center for Urban Research and Experiment, 1972.
Παραπομπή MLASelected Proceedings of a Conference On Methods and Concepts of Forecasting Travel Demand for Future Transportation Systems: Held On July 17-18, 1969. Philadelphia: Transportation Studies Center, Center for Urban Research and Experiment, 1972.