APA (7 वां संस्करण) प्रशस्ति पत्र

United Nations. Dept. of Economic and Social Affairs. (1966). Transport of materials in bulk or in containers by pipe-lines. s.n.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

United Nations. Dept. of Economic and Social Affairs. Transport of Materials in Bulk or in Containers by Pipe-lines. New York: s.n, 1966.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

United Nations. Dept. of Economic and Social Affairs. Transport of Materials in Bulk or in Containers by Pipe-lines. s.n, 1966.

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