APA引文

Lougheed, L. (2013). Barron's IELTS: International English language testing system. New York: Barron's Educational Series.

Trích dẫn kiểu Chicago

Lougheed, Lin. Barron's IELTS: International English Language Testing System. New York: Barron's Educational Series, 2013.

MLA引文

Lougheed, Lin. Barron's IELTS: International English Language Testing System. New York: Barron's Educational Series, 2013.

警告：这些引文格式不一定是100％准确.