Citazione Stile APA (7a Edizione)

Harmer, J. (2001). The practice of english language teaching (3a. ed.). Longman.

Citazione stile Chigago Style (17a edizione)

Harmer, Jeremy. The Practice of English Language Teaching. 3a. ed. Essex: Longman, 2001.

Citatione MLA (9a ed.)

Harmer, Jeremy. The Practice of English Language Teaching. 3a. ed. Longman, 2001.