Cita APA (7th ed.)

Hau, T. D. (1993). Congestion charging mechanisms for roads: An evaluation of current practice. Infrastructure and Urban Development Department, World Bank.

Cita Chicago (17th ed.)

Hau, Timothy D. Congestion Charging Mechanisms for Roads: An Evaluation of Current Practice. Washington, D.C: Infrastructure and Urban Development Department, World Bank, 1993.

Cita MLA (9th ed.)

Hau, Timothy D. Congestion Charging Mechanisms for Roads: An Evaluation of Current Practice. Infrastructure and Urban Development Department, World Bank, 1993.