Programme for International Student Assessment, Organisation for Economic Co-operation and Development, & ProQuest (Firm). (2012). Grade expectations: How marks and education policies shape students ambitions. OECD.
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Dyfyniad Arddull Chicago
Programme for International Student Assessment, Organisation for Economic Co-operation and Development, and ProQuest (Firm). Grade Expectations: How Marks and Education Policies Shape Students Ambitions. [Paris]: OECD, 2012.
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Dyfyniad MLA
Programme for International Student Assessment, et al. Grade Expectations: How Marks and Education Policies Shape Students Ambitions. OECD, 2012.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.