@book{6839,
	author = {Perelman, Chaim. and Olbrechts-Tyteca, Lucie.},
	title = {Tratado de la argumentación },
	publisher = {Gredos, },
	year = {[1989]},
	series = {Biblioteca románica hispánica. III. Manuales ; },
	address = {Madrid : },
	note = {Índices.}
}