Não informado. (1989). Education Today. Ontario Public School Board's Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Education Today. Toronto, Canada: Ontario Public School Board's Association, 1989.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Education Today. Ontario Public School Board's Association, 1989.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.