Selly, P. B. (2017). Teaching STEM outdoors: Activities for young children (First edition.). Redleaf Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSelly, Patty Born. Teaching STEM Outdoors: Activities for Young Children. First edition. St. Paul, MN: Redleaf Press, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSelly, Patty Born. Teaching STEM Outdoors: Activities for Young Children. First edition. Redleaf Press, 2017.
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