Davies,Stephen. (1979). The diffusion of process innovations. Cambridge University Press.
Dyfyniad Arddull ChicagoDavies,Stephen. The Diffusion of Process Innovations. Cambridge: Cambridge University Press, 1979.
Dyfyniad MLADavies,Stephen. The Diffusion of Process Innovations. Cambridge University Press, 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.