@book{31147,
	author = {Purcell, W. Richard. and Velez, Ignacio,},
	title = {Como comprender las finanzas de una compañia :},
	publisher = {Editorial Norma,},
	year = {1991.},
	address = {Bogotá :},
	note = {Titulo original. Understanding a Companys finances.}
}