@book{1231,
	author = {Kotler, Philip and Armstrong, Gary},
	title = {Marketing},
	publisher = {Pearson Educación},
	year = {2012},
	address = {México :},
	edition = {14a. ed.},
	url = {https://biblioeco.unsa.edu.ar/pmb/images/libros/Marketing (2012).jpg}
}