@book{12537,
	author = {Fernández A., Maxdonia E and Aguiar B., Juan E},
	title = {Lengua española: teoria y practica: ortografia, morfosintaxis, comprension lectora, formacion de vocabulario y redaccion},
	publisher = {[ S.n.],},
	year = {2011},
	address = {Asunción :},
	edition = {3a ed}
}