University of Cambridge. Local Examinations Syndicate. (2005). Cambridge IELTS 4: Examination papers from the University of Cambridge ESOL Examinations (With answers.). Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)University of Cambridge. Local Examinations Syndicate. Cambridge IELTS 4: Examination Papers from the University of Cambridge ESOL Examinations. With answers. Cambridge: Cambridge University Press, 2005.
Lua MLA (8ú heag.)University of Cambridge. Local Examinations Syndicate. Cambridge IELTS 4: Examination Papers from the University of Cambridge ESOL Examinations. With answers. Cambridge University Press, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.