Cuyler, M., & Hillenbrand, W. (2006). Please play safe!: Penguin's guide to playground safety. Scholastic Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCuyler, Margery, और Will Hillenbrand. Please Play Safe!: Penguin's Guide to Playground Safety. New York: Scholastic Press, 2006.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCuyler, Margery, और Will Hillenbrand. Please Play Safe!: Penguin's Guide to Playground Safety. Scholastic Press, 2006.
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