APA引文

(2011). English unlimited B1: Pre-intermediate coursebook. Cambridge: Cambridge University press.

Trích dẫn kiểu Chicago

English Unlimited B1: Pre-intermediate Coursebook. Cambridge: Cambridge University press, 2011.

MLA引文

English Unlimited B1: Pre-intermediate Coursebook. Cambridge: Cambridge University press, 2011.

警告：這些引文格式不一定是100％准確.