Gude, K., & Kathy Gude. (2000). Advanced listening and speaking: CAE (New edition.). Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Gude, Kathy, agus Kathy Gude. Advanced Listening and Speaking: CAE. New edition. Oxford: Oxford University Press, 2000.
Lua MLA (8ú heag.)Gude, Kathy, agus Kathy Gude. Advanced Listening and Speaking: CAE. New edition. Oxford University Press, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.