@book{12124,
	author = {Villanes Cairo, Carlos,  and León, Esperanza, },
	title = {Las ballenas cautivas /},
	publisher = {SM,},
	year = {1993},
	series = {El barco de vapor.},
	address = {Madrid : },
	edition = {4ª ed.},
	note = {A partir de 9 años }
}