APA (7 वां संस्करण) प्रशस्ति पत्र

Não informado. (1971). Comment on Education. Ontario Institute for Studies in Education.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Não informado. Comment on Education. Toronto, Canada: Ontario Institute for Studies in Education, 1971.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Não informado. Comment on Education. Ontario Institute for Studies in Education, 1971.

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