International Kindergarten Union. Committee of Nineteen. (1913). The kindergarten: Reports of the Committee of nineteen on the theory and practice of the kindergarten. Houghton Mifflin company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रInternational Kindergarten Union. Committee of Nineteen. The Kindergarten: Reports of the Committee of Nineteen on the Theory and Practice of the Kindergarten. Boston, New York [etc.]: Houghton Mifflin company, 1913.
एमएलए (8वां संस्करण) प्रशस्ति पत्रInternational Kindergarten Union. Committee of Nineteen. The Kindergarten: Reports of the Committee of Nineteen on the Theory and Practice of the Kindergarten. Houghton Mifflin company, 1913.
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