Citazione Stile APA (7a Edizione)
Harmer, J. (1991). <The> Practice of English Language Teaching: Longman Handbooks for Language Teachers (1. ed.). Longman.
Citazione stile Chigago Style (17a edizione)
Harmer, Jeremy. <The> Practice of English Language Teaching: Longman Handbooks for Language Teachers. 1. ed. London: Longman, 1991.
Citatione MLA (9a ed.)
Harmer, Jeremy. <The> Practice of English Language Teaching: Longman Handbooks for Language Teachers. 1. ed. Longman, 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.