Collins, J. (2009). How the Mighty Fall: And Why Some Companies Never Give In. RH Business Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCollins, Jim. How the Mighty Fall: And Why Some Companies Never Give In. RH Business Books, 2009.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCollins, Jim. How the Mighty Fall: And Why Some Companies Never Give In. RH Business Books, 2009.
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