Reynaert, P. (1967). A consideration of underground urban transport systems: Metropolitan railway, underground tramway or motorbus tunnels? Brussels: International Union of Public Transport.
Παραπομπή Chicago StyleReynaert, P. A Consideration of Underground Urban Transport Systems: Metropolitan Railway, Underground Tramway or Motorbus Tunnels? Brussels: International Union of Public Transport, 1967.
Παραπομπή MLAReynaert, P. A Consideration of Underground Urban Transport Systems: Metropolitan Railway, Underground Tramway or Motorbus Tunnels? Brussels: International Union of Public Transport, 1967.
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