@book{32558,
	author = {Ciceron, Marco Tulio. and Guillen Cabañero, José,},
	title = {Sobre los deberes /},
	publisher = {Ediciones Altaya,},
	year = {1989.},
	series = {Grandes obras del pensamiento ;},
	address = {Barcelona :},
	note = {Titulo original. De offociis.}
}