- Elemental (A1-A2)
Baker, Ann. Tree of three An elementary pronunciation course. Cambridge University Press, 2006
Marks, Jonathan. English pronunciation in use. Elementary. Cambridge University Press, 2006
McCarthy, Michael and Felicity O’Dell. English vocabulary in use. Elementary. Cambridge University Press, 2017
Murphy, Raymond. Essential grammar in use. A self-study reference and practice book for elementary students of English. Cambridge University Press, 2007
Naylor, Helen and Raymond Murphy. Essential grammar in use. Supplementary exercises. Cambridge University Press, 2015
- Intermediate (B1-B2)
Baker, Ann. Ship or sheep? An intermediate pronunciation course. Cambridge University Press, 2006
Brook-Hart, Guy. Complete First. Student’s Book with answers. Cambridge University Press, 2008
Hancock, Mark. English Pronunciation in use. Intermediate. Cambridge University Press, 2007
Hanshemi, Louise and Raymond Murphy. English grammar in use. Supplementary exercises. Cambridge University Press, 2012
Latham-Koenig, Christina and Clive Oxenden. English file. Intermediate student’s book. Oxford university press, 2013
McCarthy, Michael and Felicity O’Dell. English collocations in use. Intermediate. Cambridge University Press, 2017
McCarthy, Michael and Felicity O’Dell. English idioms in use. Intermediate. Cambridge University Press, 2017
McCarthy, Michael and Felicity O’Dell. English phrasal verbs in use. Intermediate. Cambridge University Press, 2017
Redman, Stuart. English vocabulary in use. Pre-intermediate and intermediate. Cambridge University Press, 2017
Swan, Michael and Catherine Walter. How English works. A grammar practice book with answers. Oxford University Press, 2000
Thomas, Barbara and Amanda Thomas. Complete First. Workbook with answers. Cambridge University Press, 2008
- Advance (C1-C2)
Hewings, Martin. Advanced grammar in use. A self-study and practice book for advanced learners of English. Cambridge University Press, 2015
- Manuales de gramática y diccionarios.
Cambridge. Cambridge learner’s dictionary. 4th ed. Cambridge University Press, 2013
Cambridge. Diccionario Cambridge compact. English-Spanish, Español-Inglés. Cambridge University Press, 2012
Sánchez Benedito, Francisco. Gramática inglesa. 9th ed. Pearson, 2007