Não informado. (1948). Young children. National Association for the Education of Young Children.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Young Children. Washington: National Association for the Education of Young Children, 1948.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Young Children. National Association for the Education of Young Children, 1948.
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