Association for Childhood Education (International). (1952). Children can work independently.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAssociation for Childhood Education (International). Children Can Work Independently. Washington, 1952.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAssociation for Childhood Education (International). Children Can Work Independently. 1952.
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