Zeitz, P. (2007). The art and craft of problem solving (2nd ed.). John Wiley.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रZeitz, Paul. The Art and Craft of Problem Solving. 2nd ed. Hoboken, NJ: John Wiley, 2007.
एमएलए (8वां संस्करण) प्रशस्ति पत्रZeitz, Paul. The Art and Craft of Problem Solving. 2nd ed. John Wiley, 2007.
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