APA引文

Cullen, P. (2008). Cambridge Vocabulary for IELTS. New York: Cambridge University Press.

Trích dẫn kiểu Chicago

Cullen, Pauline. Cambridge Vocabulary for IELTS. New York: Cambridge University Press, 2008.

MLA引文

Cullen, Pauline. Cambridge Vocabulary for IELTS. New York: Cambridge University Press, 2008.

警告：这些引文格式不一定是100％准确.