Não informado. (1971). Cambridge Journal of Education. Cambridge Institute of Education.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Cambridge Journal of Education. Cambridge, Inglaterra: Cambridge Institute of Education, 1971.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Cambridge Journal of Education. Cambridge Institute of Education, 1971.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.