Ries Al. (2004). Origin of Brands. Harper Collins.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRies Al. Origin of Brands. New York: Harper Collins, 2004.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRies Al. Origin of Brands. Harper Collins, 2004.
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