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Dyfyniad Arddull ChicagoPreston, Paschal. Reshaping Communications: Technology, Information and Social Change. London: Sage, 2001.
Dyfyniad MLAPreston, Paschal. Reshaping Communications: Technology, Information and Social Change. Sage, 2001.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.