Coyle, J. J., Bardi, E. J., Novack, R. A., & Bardi, E. J. (2000). Transportation (5th ed.). Mason: South-Western College Publishing.
Παραπομπή Chicago StyleCoyle, John J., Edward J. Bardi, Robert A. Novack, and Edward J. Bardi. Transportation. 5th ed. Mason: South-Western College Publishing, 2000.
Παραπομπή MLACoyle, John J., Edward J. Bardi, Robert A. Novack, and Edward J. Bardi. Transportation. 5th ed. Mason: South-Western College Publishing, 2000.
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