@book{96079,
	author = {Romo Portillo, Blanca Estela},
	title = {La migración legal de tlaxcaltecas, hacia Canadá},
	publisher = {El autor,},
	year = {2009},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/107711.pdf}
}