APA引文

Cullen, P. (2012). Cambridge vocabulary for IELTS with answers: Self-study vocabulary practice. Cambridge University Press.

Trích dẫn kiểu Chicago

Cullen, Pauline. Cambridge Vocabulary for IELTS With Answers: Self-study Vocabulary Practice. Cambridge University Press, 2012.

MLA引文

Cullen, Pauline. Cambridge Vocabulary for IELTS With Answers: Self-study Vocabulary Practice. Cambridge University Press, 2012.

警告：这些引文格式不一定是100％准确.