Cambridge English Workbook IV , Cambridge Univrersity Press 1998 & 3 books

1. Literature Companion 2 – Selection from Reading Literature, By Roger Gower and Margaret Pearson, Longman Publishing 1999
2. Cambridge English Workbook Four for Schools, by Andrew Littlejohn and Diana Hicks, Cambridge University Press 1998
3. Tuning in the USA – Listeners Group 1, by Alvin Cooperman and George Lefferts, Maxwell Macmillan Publishing 
Group 1990 
4. Upper Intermediate Matters, Students Book, by Jan Bell and Roger Gower, Pearson Education Limited, 1992