Vince, M., & Emmerson, P. (2003). First Certificate: Language practice. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Vince, Michael, agus Paul Emmerson. First Certificate: Language Practice. Oxford: Oxford University Press, 2003.
Lua MLA (8ú heag.)Vince, Michael, agus Paul Emmerson. First Certificate: Language Practice. Oxford University Press, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.