Hau, T. D. (1992). Economic fundamentals of road pricing: A diagrammatic analysis. Infrastructure and Urban Development Department, World Bank.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHau, Timothy D. Economic Fundamentals of Road Pricing: A Diagrammatic Analysis. Washington, D.C: Infrastructure and Urban Development Department, World Bank, 1992.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHau, Timothy D. Economic Fundamentals of Road Pricing: A Diagrammatic Analysis. Infrastructure and Urban Development Department, World Bank, 1992.
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