Hertan, C. (2013). Power chess for kids: More ways to think ahead and become one of the best players in your school. New in Chess.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHertan, Charles. Power Chess for Kids: More Ways to Think Ahead and Become One of the Best Players in Your School. Alkmaar, Netherlands: New in Chess, 2013.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHertan, Charles. Power Chess for Kids: More Ways to Think Ahead and Become One of the Best Players in Your School. New in Chess, 2013.
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