Niven, D. (2014). It's not about the shark: How to solve unsolvable problems (First Edition.). St. Martin's Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNiven, David. It's Not About the Shark: How to Solve Unsolvable Problems. First Edition. New York: St. Martin's Press, 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNiven, David. It's Not About the Shark: How to Solve Unsolvable Problems. First Edition. St. Martin's Press, 2014.
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