@book{4984,
	author = {Naud-Ithurbide, J.R. and Sainz-Amor, Concepción},
	title = {Educación preescolar},
	publisher = {Ruy Díaz},
	year = {1968},
	series = {Paideia nouvelle encyclopédie pédagogique},
	address = {Buenos Aires},
	edition = {1ª ed.}
}