Citazione Stile APA (7a Edizione)

Harmer, J. (2015). The practice of English language teaching (Fifth edition.). Pearson/Longman.

Citazione stile Chigago Style (17a edizione)

Harmer, Jeremy. The Practice of English Language Teaching. Fifth edition. Harlow, England: Pearson/Longman, 2015.

Citatione MLA (8a ed.)

Harmer, Jeremy. The Practice of English Language Teaching. Fifth edition. Pearson/Longman, 2015.