@book{125512,
	author = {Allen, William H.},
	title = {Los periquitos},
	publisher = {Editorial Hispano Europea},
	year = {c1987.},
	series = {Colección Herakles. Animales domésticos},
	address = {Barcelona},
	edition = {4. ed},
	note = {Translation of: Budgerigars.}
}