Não informado. (1968). Convergence: International journal of adult education. Ontario Institute for Studies in Education.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Convergence: International Journal of Adult Education. Toronto, Canada: Ontario Institute for Studies in Education, 1968.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Convergence: International Journal of Adult Education. Ontario Institute for Studies in Education, 1968.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.