@book{5505,
	author = {GSMA (Organization)‏},
	title = {The Mobile Economy North America 2019},
	publisher = {GSM Association,},
	year = {2019},
	address = {London :},
	url = {https://www.gsmaintelligence.com/research/?file=de3c19f3cee0807f6e7e73d2c4670f13&download},
}