@book{198434,
	author = {Virgillo, Carmelo and Valdivieso, L. Teresa.},
	title = {Aproximaciones al estudio de la literatura hispánica},
	publisher = {McGraw-Hill College},
	year = {c1999.},
	address = {Boston},
	edition = {4. ed.},
	url = {http://www.loc.gov/catdir/description/mh023/98037732.html}
}