Cita APA

 Harmer, J. (2017).  How to teach writing.  Pearson.

Chicago Style Citation

 Harmer, Jeremy.  How to Teach Writing.  Pearson, 2017.

Cita MLA

 Harmer, Jeremy.  How to Teach Writing.  Pearson, 2017.

Atenció: Aquestes cites poden no estar 100% correctes.