@book{149369,
	author = {Zapata Guerrero, Édgar Enrique,},
	title = {Marketing :},
	publisher = {Universidad Autónoma de Bucaramanga,},
	year = {2002.},
	address = {Bucaramanga :},
	url = {https://elibro.net/ereader/politecnicointernacional/22803}
}