Cita APA (7a ed.)
Harmer, J. The Practice of English Language Teaching. Pearson.
Cita estilo Chicago (17a ed.)
Harmer, Jeremy. The Practice of English Language Teaching. Essex, Inglaterra: Pearson.
Cita MLA (9a ed.)
Harmer, Jeremy. The Practice of English Language Teaching. Pearson.
Precaución: Estas citas no son 100% exactas.