APA引文

Black, M. (2006). Objective IELTS: Intermediate Workbook with Answers. Cambridge, UK: Cambridge University Press.

Trích dẫn kiểu Chicago

Black, Michael. Objective IELTS: Intermediate Workbook With Answers. Cambridge, UK: Cambridge University Press, 2006.

MLA引文

Black, Michael. Objective IELTS: Intermediate Workbook With Answers. Cambridge, UK: Cambridge University Press, 2006.

警告：這些引文格式不一定是100％准確.