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Dyfyniad Arddull Chicago"Economic Provisions of Collective Bargaining Agreements in 2010." Labstat Updates 2012.
Dyfyniad MLA"Economic Provisions of Collective Bargaining Agreements in 2010." Labstat Updates, 2012.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.