MLA

Harmer, Jeremy. How to Teach English. 2nd, [fully revised] edition Harlow: Pearson Education, 2009.

APA

Harmer, J. (2009). How to teach English. 2nd, [fully revised] edition Harlow: Pearson Education.

Chicago

Harmer, Jeremy, How to Teach English. 2nd, [fully revised] edition Harlow: Pearson Education, 2009.