Kostyal, K. M., & Harper, F. (2017). Benjamin Franklin's wise words: How to work smart, play well, and make real friends. National Geographic Partners.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKostyal, K. M., और Fred Harper. Benjamin Franklin's Wise Words: How to Work Smart, Play Well, and Make Real Friends. Washington, D.C.: National Geographic Partners, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKostyal, K. M., और Fred Harper. Benjamin Franklin's Wise Words: How to Work Smart, Play Well, and Make Real Friends. National Geographic Partners, 2017.
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