@book{141499,
	author = {Villegas, Baldomero. and Menéndez y Pelayo, Marcelino,},
	title = {La cuestión social en el Quijote },
	publisher = {[s.n.], },
	year = {1904.},
	address = {Madrid : },
	url = {http://bdh-rd.bne.es/viewer.vm?id=0000189348&page=1 }
}