@book{28293,
	author = {Bernstein, Basil},
	title = {La estructura del discurso pedagógico :},
	publisher = {Morata,},
	year = {1997.},
	series = {Col.Pedagogía. Educación crítico / Julio Torres Santomé},
	address = {Madrid :},
	edition = {3a ed.}
}