@book{3001,
	author = {Lacey, Minna and Cartwright, Stephen \ Alonso de la Sierra, Gemma \ Berkovic, Doriana Lawrence, Michelle \ Berkovic, Doriana \ Lawrence, Michelle},
	title = {Descubro la naturaleza },
	publisher = { Usborne, 2008},
	address = {Londres },
	note = {Incluye glosario de la naturaleza.}
}