Não informado. (1968). Language Teaching Abstracts. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Não informado. Language Teaching Abstracts. London: Cambridge University Press, 1968.
Lua MLA (8ú heag.)Não informado. Language Teaching Abstracts. Cambridge University Press, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.