Citazione Stile APA (7a Edizione)

Harmer, J. (2007). The practice of english language teaching (Fourth Edition.). Pearson Longman ELT.

Citazione stile Chigago Style (17a edizione)

Harmer, Jeremy. The Practice of English Language Teaching. Fourth Edition. Harlow: Pearson Longman ELT, 2007.

Citatione MLA (9a ed.)

Harmer, Jeremy. The Practice of English Language Teaching. Fourth Edition. Pearson Longman ELT, 2007.