@book{126947,
	author = {Sánchez Hidalgo, Efraín Sigisfredo},
	title = {Psicología de la crianza},
	publisher = {Editorial Universitaria. Universidad de Puerto Rico},
	year = {1973.},
	address = {Río Piedras, P.R.},
	note = {Same : 1973, 1981.}
}