Cofnodi Dyfyniadau
Dyfyniad APA
Organisation for Economic Co-operation and Development & ProQuest (Firm). (2010). PISA 2009 results: What students know and can do. OECD.
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Dyfyniad Arddull Chicago
Organisation for Economic Co-operation and Development and ProQuest (Firm). PISA 2009 Results: What Students Know and Can Do. [Paris]: OECD, 2010.
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Dyfyniad MLA
Organisation for Economic Co-operation and Development and ProQuest (Firm). PISA 2009 Results: What Students Know and Can Do. OECD, 2010.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.