Headway : workbook elementery
.Soars, John
;Soars, Liz
.Oxford University Press
A MANUAL OF ADVANCED ENGLISH FOR FOREIGN STUDENTS (BAJA)
.Blackstone, Bernard
. 1st. ed.Longmans, Green And Co.
Language in use : upper intermediate
.Doff, Adrian
;Jones, Christoper
. , 2000. ISBN: 0521555507. (M) LibroShape up 1pupils book
.Mol, Hans
;Davies, Paul A.
.Macmillan