United Nations. Industrial Development Organization, V. (1978). Manual for the preparation of industrial feasibility studies. Oxford and IBH.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited Nations. Industrial Development Organization, Vienna. Manual for the Preparation of Industrial Feasibility Studies. Oxford and IBH, 1978.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUnited Nations. Industrial Development Organization, Vienna. Manual for the Preparation of Industrial Feasibility Studies. Oxford and IBH, 1978.
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