Penenberg, A. L. (2013). Play at work: How games inspire breakthrough thinking. Portfolio/Penguin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPenenberg, Adam L. Play at Work: How Games Inspire Breakthrough Thinking. New York: Portfolio/Penguin, 2013.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPenenberg, Adam L. Play at Work: How Games Inspire Breakthrough Thinking. Portfolio/Penguin, 2013.
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