BUILD UP YOUR ENGLISH (Baja)
.Glover, A. J.
. 1st. ed.J. M. Dent & Sons
MODERN ENGLISH PRACTICE : EXERCISES IN ENGLISH FOR FOREIGN STUDENTS (BAJA)
.Clarke, Waldo
;Mackenzie, Munro
. 4th. ed.Longman
STEPS TO SPOKEN ENGLISH : BOOK 1(BAJA)
.The British Council
. 1st. ed.Longman
DENTïS SECOND ENGLISH BOOK (BAJA)
.Ripman, Walter
. 1st. ed.Dent & Sons
THE MODERN HANDBOOK OF ENGLISH
.Gourville, H. D.
. 8th. ed.Librería de A. García Santos
Gramatica practica: casos y dudas de nuestro lenguaje
.Vazquez, Francisco
.Ocruxaves