@book{258572,
	author = {Willingham , Ron , and Mascaró Sacristán , Pilar},
	title = {¡ Escuchame ! soy tu cliente/},
	publisher = {Prentice-Hall Hispanoamericana,S.A. , },
	year = {1996.},
	address = {México :},
	note = {Incluye índice.}
}