Association for Educational and Training Technology. (1989). International yearbook of educational and training technology. Kogan Page.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAssociation for Educational and Training Technology. International Yearbook of Educational and Training Technology. London: Kogan Page, 1989.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAssociation for Educational and Training Technology. International Yearbook of Educational and Training Technology. Kogan Page, 1989.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.