@book{72818,
	author = {Covey, Stephen R. and Piatigorsky, Jorge.},
	title = {Los 7 hábitos de la gente altamente efectiva :},
	publisher = {Ediciones Paidós Ibérica, },
	year = {1997.},
	series = {Paidós Plural ;},
	address = {Barcelona :},
	note = {Incluye índice.}
}