Lengua Extranjera

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Gu�a Did�ctica, vol. II, M�xico, SEP-UTS, 1994.

Luna, Manuel y Taylor, James, Impact 1, M�xico, D.F., Macmillan, 1993.

Hartley, Bernard y Peter, Viney, American Streamline, Nueva York, Oxford University Press, 1984.

Hinton, Michael y Paul, Seligson, Mosaic, Edimburgo, Thomas Nelson & Sons, 1a. ed., 1991.

Hess Ramos, Federico, Astivia Montero, Mar�a Susana y Gustavo, Ram�rez Toledo, My Third English Book, Servicios Pedag�gicos S.A. de C.V., 1978.

Soars, John & Liz, Headway, Oxford, Oxford University Press, 7a. ed., 1989, 91 PP.