Não informado. (1999). Open Praxis. International Council for Distance Education.
Lua i Stíl Chicago (17ú heag.)Não informado. Open Praxis. Cambridge, Inglaterra: International Council for Distance Education, 1999.
Lua MLA (8ú heag.)Não informado. Open Praxis. International Council for Distance Education, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.