ebrary, Inc. (2004). The value chain and marketing. Emerald Group Publishing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रebrary, Inc. The Value Chain and Marketing. Bradford, England: Emerald Group Publishing, 2004.
एमएलए (9वां संस्करण) प्रशस्ति पत्रebrary, Inc. The Value Chain and Marketing. Emerald Group Publishing, 2004.
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