Cita APA (7a ed.)

Harmer, J. (2004). How to teach writing. Longman.

Cita Chicago Style (17a ed.)

Harmer, Jeremy. How to Teach Writing. Harlow, England: Longman, 2004.

Cita MLA (8a ed.)

Harmer, Jeremy. How to Teach Writing. Longman, 2004.