Não informado. (1927). Journal of educational sociology. American Viewpoint Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Journal of Educational Sociology. Albany, NY: American Viewpoint Society, 1927.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Journal of Educational Sociology. American Viewpoint Society, 1927.
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