Não informado. (1999). Journal of Computer Assisted Learning. Blackwell Science.
Lua i Stíl Chicago (17ú heag.)Não informado. Journal of Computer Assisted Learning. Oxford, Inglaterra: Blackwell Science, 1999.
Lua MLA (8ú heag.)Não informado. Journal of Computer Assisted Learning. Blackwell Science, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.