Cita APA (7a ed.)

Harmer, J. (2007). The Practice of English language teaching (4th ed.). Pearson Education : Longman.

Cita Chicago Style (17a ed.)

Harmer, Jeremy. The Practice of English Language Teaching. 4th ed. Harlow: Pearson Education : Longman, 2007.

Cita MLA (9a ed.)

Harmer, Jeremy. The Practice of English Language Teaching. 4th ed. Pearson Education : Longman, 2007.