@book{135534,
	author = {Sánchez Hidalgo, Efraín Sigisfredo and Ayéndez de Sanchés Hidalgo, Lydia.},
	title = {Psicología de la crianza:},
	publisher = {Editorial Universitaria. Universidad de Puerto Rico,},
	year = {c1981.},
	address = {Río Piedras, P.R.:}
}