Santos, G. (2004). Road pricing: Theory and evidence. Elsevier.
Cita Chicago (17th ed.)Santos, G. Road Pricing: Theory and Evidence. Elsevier, 2004.
Cita MLA (9th ed.)Santos, G. Road Pricing: Theory and Evidence. Elsevier, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.