Hau, T. D. (1993). Congestion charging mechanisms for roads: An evaluation of current practice. Infrastructure and Urban Development Department, World Bank.
Citazione stile Chigago Style (17a edizione)Hau, Timothy D. Congestion Charging Mechanisms for Roads: An Evaluation of Current Practice. Washington, D.C: Infrastructure and Urban Development Department, World Bank, 1993.
Citatione MLA (9a ed.)Hau, Timothy D. Congestion Charging Mechanisms for Roads: An Evaluation of Current Practice. Infrastructure and Urban Development Department, World Bank, 1993.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.