@book{6504,
	author = {Lasa, Catherine De and Faller, Régis,},
	title = {El oso abandonado ; Un balón perdido /},
	publisher = {Norma,},
	year = {2007.},
	series = {Torre de papel. Naranja},
	address = {Bogotá :},
	edition = {1a. ed.}
}