Trích dẫn APA

Cullen, P. (2014). The official Cambridge guide to IELTS for academic &​ general training: Student's book with answers. Cambridge: Cambridge University Press.

Trích dẫn kiểu Chicago

Cullen, Pauline. The Official Cambridge Guide to IELTS for Academic &​ General Training: Student's Book With Answers. Cambridge: Cambridge University Press, 2014.

Trích dẫn MLA

Cullen, Pauline. The Official Cambridge Guide to IELTS for Academic &​ General Training: Student's Book With Answers. Cambridge: Cambridge University Press, 2014.

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