COHEN, W. A. (1988). The Practice Of Marketing Management Analysis, Planning And Implementation William A. Cohen. Macmillan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCOHEN, William A. The Practice Of Marketing Management Analysis, Planning And Implementation William A. Cohen. Macmillan, 1988.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCOHEN, William A. The Practice Of Marketing Management Analysis, Planning And Implementation William A. Cohen. Macmillan, 1988.
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