Bibliografia
Principal
- New language leader: pre-intermediate coursebook and workbook: Lebeau, I., Rees, G. 2014 Lebeau, I. & Rees, G. (2014). New language leader: pre-intermediate coursebook and workbook. Pearson.
- English verbs and tenses: Bourke, K. 2003 Bourke, K. (2003). English verbs and tenses. Oxford University Press.
- Oxford advanced learner's dictionary: Hornby, A.S. 2010 Hornby, A.S. (2010). Oxford advanced learner's dictionary (8th ed). Oxford University Press.
- Macmillan English grammar in context - intermediate: Vince, M. 2009 Vince, M. (2009). Macmillan English grammar in context - intermediate. Macmillan Education.