Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.