Perraton, H., Creed, C., & Robinson, B. (2002). Teacher education guidelines: Using open distance learning. UNESCO.
Lua i Stíl Chicago (17ú heag.)Perraton, Hilary, Charlote Creed, agus Bernadette Robinson. Teacher Education Guidelines: Using Open Distance Learning. Paris, Francia: UNESCO, 2002.
Lua MLA (9ú heag.)Perraton, Hilary, et al. Teacher Education Guidelines: Using Open Distance Learning. UNESCO, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.