APA引文

Black, M. (2006). Objective IELTS: Advanced. Cambridge: Cambridge University Press.

Trích dẫn kiểu Chicago

Black, MIchael. Objective IELTS: Advanced. Cambridge: Cambridge University Press, 2006.

MLA引文

Black, MIchael. Objective IELTS: Advanced. Cambridge: Cambridge University Press, 2006.

警告：这些引文格式不一定是100％准确.