Não informado. (1930). Journal of Higher Education. Ohio State University, Bureau of Educational Research.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Journal of Higher Education. Columbus, Ohio: Ohio State University, Bureau of Educational Research, 1930.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Journal of Higher Education. Ohio State University, Bureau of Educational Research, 1930.
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