Rosenberg, M. J. (2001). E-Learning. Sage.
Lua i Stíl Chicago (17ú heag.)Rosenberg, Marc J. E-Learning. New York: Sage, 2001.
Lua MLA (9ú heag.)Rosenberg, Marc J. E-Learning. Sage, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.