Rogers, E. M. (2003). Diffusion of Innovations. John Wiley and Sons.
Dyfyniad Arddull ChicagoRogers, Everett M. Diffusion of Innovations. New Jersey: John Wiley and Sons, 2003.
Dyfyniad MLARogers, Everett M. Diffusion of Innovations. John Wiley and Sons, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.