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Dyfyniad Arddull ChicagoWatts, Richard J. Power in Family Discourse. Berlin ; New York: Mouton de Gruyter, 1991.
Dyfyniad MLAWatts, Richard J. Power in Family Discourse. Mouton de Gruyter, 1991.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.