Cambridge English language assessment. (2017). Cambridge English IELTS 12 academic with answers: Authentic examination papers. England: Cambridge University press.
Trích dẫn kiểu ChicagoCambridge English language assessment. Cambridge English IELTS 12 Academic With Answers: Authentic Examination Papers. England: Cambridge University press, 2017.
MLA引文Cambridge English language assessment. Cambridge English IELTS 12 Academic With Answers: Authentic Examination Papers. England: Cambridge University press, 2017.
警告:这些引文格式不一定是100%准确.