@book{21666,
	author = {Fernández Valero, Gonzalo.},
	title = {Cuaderno de ejercicios :},
	publisher = {Editorial CEP, S.L.,},
	year = {[2014]},
	series = {Comercio y Marketing},
	address = {Madrid :},
	note = {Contiene índice.},
	url = {https://elibro.net/ereader/politecnicointernacional/51079}
}