Engström, M., & Sahlberg, B. W. (1973). Travel demand, transport systems and regional development: Models in co-ordinated planning. Gleerup.
Chicago-Zitierstil (17. Ausg.)Engström, Mats-G, und Bengt W. Sahlberg. Travel Demand, Transport Systems and Regional Development: Models in Co-ordinated Planning. Lund: Gleerup, 1973.
MLA-Zitierstil (9. Ausg.)Engström, Mats-G, und Bengt W. Sahlberg. Travel Demand, Transport Systems and Regional Development: Models in Co-ordinated Planning. Gleerup, 1973.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.