Hill, L. A., Stories for Reading Comprehension, Harlow, Essex, Longman, 1985.
Ridout, Ronald, Puzzle It Out (grade 3), Londres, Evans, 1980.
Colecci�n, Heinemann New Wave Readers, Oxford, Heinemann International, 1991.
Nivel 3:
William, Edwin B., Diccionario Ingl�s-Espa�ol, Espa�ol-Ingl�s, Bantam Books, 1989.
Colecci�n, Heinemann, New Wave Readers, Oxford, Heinemann International, 1991.
Nivel 1:
Colecci�n, Heinemann Guided Readers, Oxford, Heinemann International, 1991.
Nivel principiantes:
Colecci�n, Early Rainbow Readers, Harlow, Essex, Longman, 1986.
__Iggulden Margaret, Otto�s Story.