Organisation for Economic Co-operation and Development. (2014). PISA 2012 results: What students know and can do (Revised edition.). OECD Publishing.
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Dyfyniad Arddull Chicago
Organisation for Economic Co-operation and Development. PISA 2012 Results: What Students Know and Can Do. Revised edition. Paris, France: OECD Publishing, 2014.
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Dyfyniad MLA
Organisation for Economic Co-operation and Development. PISA 2012 Results: What Students Know and Can Do. Revised edition. OECD Publishing, 2014.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.