Dyfyniad APA

Organisation for Economic Co-operation and Development & ProQuest (Firm). (2009). Poland. Organisation for Economic Co-operation and Development.

Dyfyniad Arddull Chicago

Organisation for Economic Co-operation and Development and ProQuest (Firm). Poland. Paris: Organisation for Economic Co-operation and Development, 2009.

Dyfyniad MLA

Organisation for Economic Co-operation and Development and ProQuest (Firm). Poland. Organisation for Economic Co-operation and Development, 2009.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.