United Nations. Industrial Development Organization, V. (1978). Guide to practical project appraisal: social benefit: Cost analysis in ... countries. Oxford and IBH Publishing Co.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited Nations. Industrial Development Organization, Vienna. Guide to Practical Project Appraisal: Social Benefit: Cost Analysis in ... Countries. Oxford and IBH Publishing Co, 1978.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUnited Nations. Industrial Development Organization, Vienna. Guide to Practical Project Appraisal: Social Benefit: Cost Analysis in ... Countries. Oxford and IBH Publishing Co, 1978.
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