Capel, A., & Nixon, R. (2003). Pet masterclass intermediate: Teacher's book. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Capel, Annette, agus Rosemary Nixon. Pet Masterclass Intermediate: Teacher's Book. Oxford: Oxford University Press, 2003.
Lua MLA (9ú heag.)Capel, Annette, agus Rosemary Nixon. Pet Masterclass Intermediate: Teacher's Book. Oxford University Press, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.