Yearbook of the National Society for the Study of Education. Columbia University, Teachers College.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रYearbook of the National Society for the Study of Education. Columbia University, Teachers College.
एमएलए (9वां संस्करण) प्रशस्ति पत्रYearbook of the National Society for the Study of Education. Columbia University, Teachers College.
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