APA引文

 Merdinger, P. (2009).  Northstar 1: Listening and Speaking.  Pearson Education.

Trích dẫn kiểu Chicago

 Merdinger, Polly.  Northstar 1: Listening and Speaking.  Pearson Education, 2009.

MLA引文

 Merdinger, Polly.  Northstar 1: Listening and Speaking.  Pearson Education, 2009.

警告：這些引文格式不一定是100％准確.