Small, K. A. (1992). Urban transportation economics. Harwood Academic.
Cita Chicago Style (17a ed.)Small, Kenneth A. Urban Transportation Economics. Chur [etc.]: Harwood Academic, 1992.
Cita MLA (9a ed.)Small, Kenneth A. Urban Transportation Economics. Harwood Academic, 1992.
Precaución: Estas citas no son 100% exactas.