Walker, O. C. (2016). Marketing Strategy: A Decision-Focused Approach (7th.). McGraw -Hill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWalker, Orville C. Marketing Strategy: A Decision-Focused Approach. 7th. New Delhi: McGraw -Hill, 2016.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWalker, Orville C. Marketing Strategy: A Decision-Focused Approach. 7th. McGraw -Hill, 2016.
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