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Dyfyniad Arddull ChicagoModern Thinkers On Welfare. London: Prentice Hall/Harvester Wheatsheaf, 1995.
Dyfyniad MLAModern Thinkers On Welfare. London: Prentice Hall/Harvester Wheatsheaf, 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.