@book{25175,
	author = {De Fleur, Melvin Lawrence. and Ball-Rokeach, Sandra.},
	title = {Teorías de la comunicación de masas/},
	publisher = {Paidos },
	year = {1993.},
	series = {Paidos comunicacion},
	address = {Barcelona },
	note = {Incluye índices.}
}