APA引文

Cullen, P. (2008). Vocabulary for IELTS with Answers. Cambridge University Press.

Trích dẫn kiểu Chicago

Cullen, Pauline. Vocabulary for IELTS With Answers. Cambridge University Press, 2008.

MLA引文

Cullen, Pauline. Vocabulary for IELTS With Answers. Cambridge University Press, 2008.

警告：这些引文格式不一定是100％准确.