Weylman, C. R. (2019). The power of why (1st.). Jaico Publishing, Mumbai.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWeylman, C. Richard. The Power of Why. 1st. Jaico Publishing, Mumbai, 2019.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWeylman, C. Richard. The Power of Why. 1st. Jaico Publishing, Mumbai, 2019.
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