Orteza, E. M. Problems of theory making in education. Education quarterly..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOrteza, Evelina M. "Problems of Theory Making in Education." Education Quarterly. .
एमएलए (9वां संस्करण) प्रशस्ति पत्रOrteza, Evelina M. "Problems of Theory Making in Education." Education Quarterly., .
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