Bowden, M. (1989). Nature for the very young: A handbook of indoor and outdoor activities. Wiley.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBowden, Marcia. Nature for the Very Young: A Handbook of Indoor and Outdoor Activities. New York: Wiley, 1989.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBowden, Marcia. Nature for the Very Young: A Handbook of Indoor and Outdoor Activities. Wiley, 1989.
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