Dyfyniad APA

(2005). PISA 2003: Technical report. Paris: Organisation for Economic Co-operation and Development (OECD).

Dyfyniad Arddull Chicago

PISA 2003: Technical Report. Paris: Organisation for Economic Co-operation and Development (OECD), 2005.

Dyfyniad MLA

PISA 2003: Technical Report. Paris: Organisation for Economic Co-operation and Development (OECD), 2005.

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