Hobbs, J. (1980). Longman English course. Kanisius.
Lua i Stíl Chicago (17ú heag.)Hobbs, J. Longman English Course. Kanisius, 1980.
Lua MLA (8ú heag.)Hobbs, J. Longman English Course. Kanisius, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.