United Nations. Educational, S. a. C. O. (1977). Inter-regional co-operation in the social sciences.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited Nations. Educational, Social and Cultural Organisation. Inter-regional Co-operation in the Social Sciences. 1977.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUnited Nations. Educational, Social and Cultural Organisation. Inter-regional Co-operation in the Social Sciences. 1977.
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