@book{260269,
	author = {Pérez Portela, Arnaldo and Valdés Munar, Lázara, Lic},
	title = {Un poquito de saber /},
	publisher = {Editorial Pueblo y Educación,},
	year = {2008},
	address = {Playa, Ciudad de La Habana:},
	edition = {Primera edición.}
}