United Nations Industrial Development Organization & Industrial Development Centre for Arab States. (1980). Manual for evaluation of industrial projects. United Nations.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited Nations Industrial Development Organization और Industrial Development Centre for Arab States. Manual for Evaluation of Industrial Projects. New York: United Nations, 1980.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUnited Nations Industrial Development Organization और Industrial Development Centre for Arab States. Manual for Evaluation of Industrial Projects. United Nations, 1980.
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