Não informado. (1971). Cambridge Journal of Education. Cambridge Institute of Education.
Lua i Stíl Chicago (17ú heag.)Não informado. Cambridge Journal of Education. Cambridge, Inglaterra: Cambridge Institute of Education, 1971.
Lua MLA (8ú heag.)Não informado. Cambridge Journal of Education. Cambridge Institute of Education, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.