Dyfyniad APA

Organisation for Economic Co-operation and Development, Programme for International Student Assessment, & ProQuest (Firm). (2012). PISA 2009 technical report. OECD.

Dyfyniad Arddull Chicago

Organisation for Economic Co-operation and Development, Programme for International Student Assessment, and ProQuest (Firm). PISA 2009 Technical Report. Paris: OECD, 2012.

Dyfyniad MLA

Organisation for Economic Co-operation and Development, et al. PISA 2009 Technical Report. OECD, 2012.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.