APA引文

Cambridge, U. P. (2013). Cambridge English IELTS 9: Authentic examination papers from Cambridge ESOL with Answers.

Trích dẫn kiểu Chicago

Cambridge, University Press. Cambridge English IELTS 9: Authentic Examination Papers From Cambridge ESOL With Answers. 2013.

MLA引文

Cambridge, University Press. Cambridge English IELTS 9: Authentic Examination Papers From Cambridge ESOL With Answers. 2013.

警告：這些引文格式不一定是100％准確.