COYLE, J. J. Readings in International Business. International Textbook Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCOYLE, John J. Readings in International Business. International Textbook Company.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCOYLE, John J. Readings in International Business. International Textbook Company.
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