Modulo: The Sound System of English
Peter Roach, English Phonetics and Phonology, Cambridge University Press (3rd or 4th edition), 2009.
Sarah Philpot and Lesley Curnick: Headway Academic Skills: Reading, writing and study skills - Level 3, Oxford. ISBN: 9780194741613
Christina Latham-Koenig, Clive Oxenden, and Jerry Lambert: English File Advanced (with key and downloadable ebook) ISBN: 9780194502184