GRAVER, B. (1984). Advanced english practice: With key .-- Ed.2. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)GRAVER, B.D. Advanced English Practice: With Key .-- Ed.2. Oxford: Oxford University Press, 1984.
Lua MLA (9ú heag.)GRAVER, B.D. Advanced English Practice: With Key .-- Ed.2. Oxford University Press, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.