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Dyfyniad Arddull ChicagoEuropean Trade Union Institute (ETUI). Immigration in Western Europe: Development, Situation, Outlook. Brussels: ETUI, 1993.
Dyfyniad MLAEuropean Trade Union Institute (ETUI). Immigration in Western Europe: Development, Situation, Outlook. Brussels: ETUI, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.