Cambridge English language assessment. (2017). Cambridge English IELTS 9 with answers: Authentic examination papers from Cambridge Esol. England: Cambridge University press.
Trích dẫn kiểu ChicagoCambridge English language assessment. Cambridge English IELTS 9 With Answers: Authentic Examination Papers From Cambridge Esol. England: Cambridge University press, 2017.
Deismireacht MLACambridge English language assessment. Cambridge English IELTS 9 With Answers: Authentic Examination Papers From Cambridge Esol. England: Cambridge University press, 2017.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.