APA引文

Lougheed, L. (2007). Barron's IELTS: International English language testing system. TR.

Trích dẫn kiểu Chicago

Lougheed, Lin. Barron's IELTS: International English Language Testing System. TR, 2007.

MLA引文

Lougheed, Lin. Barron's IELTS: International English Language Testing System. TR, 2007.

警告：這些引文格式不一定是100％准確.