Citazione Stile APA (7a Edizione)

Small, K. A., & Verhoef, E. T. (2007). The economics of urban transportation. Routledge.

Citazione stile Chigago Style (17a edizione)

Small, Kenneth A., e E. T. Verhoef. The Economics of Urban Transportation. London: Routledge, 2007.

Citatione MLA (9a ed.)

Small, Kenneth A., e E. T. Verhoef. The Economics of Urban Transportation. Routledge, 2007.