Davies, S. (1979). The diffusion of process innovations. Cambridge: 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: Cambridge University Press, 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.