IELTS Authentic Examination Papers from Cambridge ESOL with answers. Cambridge University Press.
Citazione stile Chigago Style (17a edizione)IELTS Authentic Examination Papers from Cambridge ESOL with Answers. Cambridge: Cambridge University Press.
Citatione MLA (9a ed.)IELTS Authentic Examination Papers from Cambridge ESOL with Answers. Cambridge University Press.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.