APA (7 वां संस्करण) प्रशस्ति पत्र

Clarke, G. R., & Wallsten, S. J. (2002). Universal(ly bad) service: Providing infrastructure services to rural and poor urban consumers. Regulation and Competition Policy, Development Research Group, World Bank.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Clarke, George R.G, और Scott J. Wallsten. Universal(ly Bad) Service: Providing Infrastructure Services to Rural and Poor Urban Consumers. Washington, D.C: Regulation and Competition Policy, Development Research Group, World Bank, 2002.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Clarke, George R.G, और Scott J. Wallsten. Universal(ly Bad) Service: Providing Infrastructure Services to Rural and Poor Urban Consumers. Regulation and Competition Policy, Development Research Group, World Bank, 2002.

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