Harmer, J. (1998). How to teach english: An introduction to the practice of english language teaching (1a. ed.). Pearson Education.

Harmer, Jeremy. How to Teach English: An Introduction to the Practice of English Language Teaching. 1a. ed. Essex: Pearson Education, 1998.

Harmer, Jeremy. How to Teach English: An Introduction to the Practice of English Language Teaching. 1a. ed. Pearson Education, 1998.