@book{2829,
	author = {Toulmin, Stephen Edelston, and Rieke, Richard D.},
	title = {An introduction to reasoning},
	publisher = {MacMillan,},
	year = {1984.},
	address = {Estados Unidos :},
	edition = {2.Ed.},
	note = {Donacion:manuel j.Paez;abr/95.}
}