@book{25581,
	author = {Tennenty, John and Friend, Graham},
	title = {Como delinear un modelo de negocios /},
	publisher = {Cuatro Media,},
	year = {2008},
	series = {Colección Finanzas y Negocios},
	address = {Buenos Aires, Argentina :},
	note = {Titulo original : Guide to business modelling}
}