Ryan, F. (1982). Trade training - some new thinking. Center for Economic Order.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRyan, F.A. Trade Training - Some New Thinking. Madras: Center for Economic Order, 1982.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRyan, F.A. Trade Training - Some New Thinking. Center for Economic Order, 1982.
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