Dyfyniad APA
Organisation for Economic Co-operation and Development, Programme for International Student Assessment, & ProQuest (Firm). (2009). PISA 2009 assessment framework: Key competencies in reading, mathematics and science. OECD.
Dyfyniad Arddull Chicago
Organisation for Economic Co-operation and Development, Programme for International Student Assessment, and ProQuest (Firm). PISA 2009 Assessment Framework: Key Competencies in Reading, Mathematics and Science. Paris: OECD, 2009.
Dyfyniad MLA
Organisation for Economic Co-operation and Development, et al. PISA 2009 Assessment Framework: Key Competencies in Reading, Mathematics and Science. OECD, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.