Organisation for Economic Co-operation and Development, Programme for International Student Assessment, & ProQuest (Firm). (2009). PISA data analysis manual (SPSS, 2nd ed.). OECD.
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Dyfyniad Arddull Chicago
Organisation for Economic Co-operation and Development, Programme for International Student Assessment, and ProQuest (Firm). PISA Data Analysis Manual. SPSS, 2nd ed. Paris, France: OECD, 2009.
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Dyfyniad MLA
Organisation for Economic Co-operation and Development, et al. PISA Data Analysis Manual. SPSS, 2nd ed. OECD, 2009.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.