Dyfyniad APA

Programme for International Student Assessment, Organisation for Economic Co-operation and Development, & ProQuest (Firm). (2005). PISA 2003 data analysis manual: SPSS users. OECD.

Dyfyniad Arddull Chicago

Programme for International Student Assessment, Organisation for Economic Co-operation and Development, and ProQuest (Firm). PISA 2003 Data Analysis Manual: SPSS Users. Paris, France: OECD, 2005.

Dyfyniad MLA

Programme for International Student Assessment, et al. PISA 2003 Data Analysis Manual: SPSS Users. OECD, 2005.

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