(1967). System considerations for urban freeways: An information report of the Institute of Traffic Engineers. Washington, D.C: [s.n.].
Παραπομπή Chicago StyleSystem Considerations for Urban Freeways: An Information Report of the Institute of Traffic Engineers. Washington, D.C: [s.n.], 1967.
Παραπομπή MLASystem Considerations for Urban Freeways: An Information Report of the Institute of Traffic Engineers. Washington, D.C: [s.n.], 1967.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.