Citazione Stile APA (7a Edizione)

Gòmez-Ibánez, J. A., & Small, K. A. (1994). Road pricing for congestion management: A survey of international practice. National Academy Press.

Citazione stile Chigago Style (17a edizione)

Gòmez-Ibánez, José A., e Kenneth A. Small. Road Pricing for Congestion Management: A Survey of International Practice. Washington, D.C: National Academy Press, 1994.

Citatione MLA (9a ed.)

Gòmez-Ibánez, José A., e Kenneth A. Small. Road Pricing for Congestion Management: A Survey of International Practice. National Academy Press, 1994.