APA引文

Black, M. (2006). Objective IELTS: Intermediate Student's book. Cambridge, UK: Cambridge University Press.

Trích dẫn kiểu Chicago

Black, Michael. Objective IELTS: Intermediate Student's Book. Cambridge, UK: Cambridge University Press, 2006.

MLA引文

Black, Michael. Objective IELTS: Intermediate Student's Book. Cambridge, UK: Cambridge University Press, 2006.

警告：這些引文格式不一定是100％准確.