Pattanayak, S. K. (2006). The use of willingness to pay experiments: Estimating demand for piped water connections in Sri Lanka. World Bank.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPattanayak, Subhrendu K. The Use of Willingness to Pay Experiments: Estimating Demand for Piped Water Connections in Sri Lanka. Washington, D.C: World Bank, 2006.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPattanayak, Subhrendu K. The Use of Willingness to Pay Experiments: Estimating Demand for Piped Water Connections in Sri Lanka. World Bank, 2006.
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