APA aipamena

KEEGAN, D. (1996). Foundations of distance education.-- Ed. 3. Routledge.

Chicago Style aipamena

KEEGAN, Desmond. Foundations of Distance Education.-- Ed. 3. London: Routledge, 1996.

MLA aipamena

KEEGAN, Desmond. Foundations of Distance Education.-- Ed. 3. Routledge, 1996.