United Nations. Industrial Development Organization, Dasgupta, P., Sen, A., & Marglin, S. A. (1972). Guidelines for project evaluation. United Nations.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited Nations. Industrial Development Organization, Partha Dasgupta, Amartya Sen, और Stephen A. Marglin. Guidelines for Project Evaluation. New York: United Nations, 1972.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUnited Nations. Industrial Development Organization, et al. Guidelines for Project Evaluation. United Nations, 1972.
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