@book{3148,
	author = { Ries, Al},
	title = {Posicionamiento :},
	publisher = {McGraw Hill, },
	year = {1982.},
	address = {México :},
	url = {https://isae.metabiblioteca.org/cgi-bin/koha/opac-retrieve-file.pl?id=54188dac97e344374059a11763b8680e}
}