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Dyfyniad Arddull ChicagoOrganisation for Economic Co-operation and Development, Global Forum on Taxation, and ProQuest (Firm). Tax Co-operation: Towards a Level Playing Field :2007 Assessment. Paris, France: OECD, 2007.
Dyfyniad MLAOrganisation for Economic Co-operation and Development, et al. Tax Co-operation: Towards a Level Playing Field :2007 Assessment. OECD, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.