Council for Exceptional Children Division for Early Childhoo. (1989). Journal of early intervention. Division of Early Childhood, Council for Exceptional Children.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCouncil for Exceptional Children Division for Early Childhoo. Journal of Early Intervention. Reston, Va: Division of Early Childhood, Council for Exceptional Children, 1989.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCouncil for Exceptional Children Division for Early Childhoo. Journal of Early Intervention. Division of Early Childhood, Council for Exceptional Children, 1989.
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