@book{120177,
	author = {Piquer y Jover, José Juan.},
	title = {Los factores influyentes en la delincuencia juvenil },
	editor = {Gráf. Marina)},
	publisher = {[s. n.], },
	year = {1950 (},
	address = {Barcelona : },
	edition = {2ª ed.}
}