@book{271653,
	author = {Reigeluth, Charles M.},
	title = {Diseño de la instrucción :},
	publisher = {Aula XXI/Santillana,},
	year = {2000.},
	address = {Madrid :},
	url = {http://www.loc.gov/catdir/enhancements/fy0709/83014185-d.html}
}