@book{51270,
	author = {Rogers, Everett M. and Shoemaker, F. Floyd.},
	title = {La comunicación de innovaciones ; un enfoque transcultural},
	publisher = {Herrero Hnos.,},
	year = {1974},
	address = {México, D. F. :},
	note = {2 ed. de "Diffusion of innovations"}
}