Não informado. (1969). Ontario education. Ontario Public School Trustees Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Ontario Education. Toronto, Canada: Ontario Public School Trustees Association, 1969.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Ontario Education. Ontario Public School Trustees Association, 1969.
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