APA引文

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

Trích dẫn kiểu Chicago

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

MLA引文

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

警告：這些引文格式不一定是100％准確.