APA-viite (7. p.)

Harmer, J. (2007). The practice of english language teaching (4th ed.). Pearson.

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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