Gardner, D. B. (1964). Development in early childhood: The preschool years. Harper & Row.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGardner, David Bruce. Development in Early Childhood: The Preschool Years. New York: Harper & Row, 1964.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGardner, David Bruce. Development in Early Childhood: The Preschool Years. Harper & Row, 1964.
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