Collis, B. (1996). Tele-learning in a digital world: The future of distance learning. International Thomson Computer Press.
Lua i Stíl Chicago (17ú heag.)Collis, Betty. Tele-learning in a Digital World: The Future of Distance Learning. London: International Thomson Computer Press, 1996.
Lua MLA (9ú heag.)Collis, Betty. Tele-learning in a Digital World: The Future of Distance Learning. International Thomson Computer Press, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.