United Nations Industrial Development Organization. (1976). Information sources on the machine tool industry. United Nations.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited Nations Industrial Development Organization. Information Sources on the Machine Tool Industry. New York: United Nations, 1976.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUnited Nations Industrial Development Organization. Information Sources on the Machine Tool Industry. United Nations, 1976.
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