Παραπομπή APA

Nijkamp, P., Rienstra, S. A., Vleugel, J. M., & Vleugel, J. M. (1998). Transportation planning and the future. New York: John Wiley & Sons.

Παραπομπή Chicago Style

Nijkamp, Peter., Sytze A. Rienstra, Japp M. Vleugel, and Jaap M. Vleugel. Transportation Planning and the Future. New York: John Wiley & Sons, 1998.

Παραπομπή MLA

Nijkamp, Peter., Sytze A. Rienstra, Japp M. Vleugel, and Jaap M. Vleugel. Transportation Planning and the Future. New York: John Wiley & Sons, 1998.

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