United Nations Industrial Development Organization. (1978). Manual for the preparation of industrial feasibility studies. United Nations.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited Nations Industrial Development Organization. Manual for the Preparation of Industrial Feasibility Studies. New York: United Nations, 1978.
एमएलए (8वां संस्करण) प्रशस्ति पत्रUnited Nations Industrial Development Organization. Manual for the Preparation of Industrial Feasibility Studies. United Nations, 1978.
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