Walker, O. C. (2014). Marketing strategy a decision-focused approach 8th ed. McGraw-Hill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWalker, Orville C. Marketing Strategy a Decision-focused Approach 8th Ed. McGraw-Hill, 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWalker, Orville C. Marketing Strategy a Decision-focused Approach 8th Ed. McGraw-Hill, 2014.
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