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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रebrary, Inc. Markets and Marketing: An Emerald Guide. Bradford, England: Emerald Group Publishing, 2005.
एमएलए (9वां संस्करण) प्रशस्ति पत्रebrary, Inc. Markets and Marketing: An Emerald Guide. Emerald Group Publishing, 2005.
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