Organisation for Economic Co-operation and Development, Programme for International Student Assessment, & ProQuest (Firm). (2009). PISA 2009 assessment framework: Key competencies in reading, mathematics and science. OECD.
Chicago-referens (17:e uppl.)Organisation for Economic Co-operation and Development, Programme for International Student Assessment, och ProQuest (Firm). PISA 2009 Assessment Framework: Key Competencies in Reading, Mathematics and Science. Paris: OECD, 2009.
MLA-referens (9:e uppl.)Organisation for Economic Co-operation and Development, et al. PISA 2009 Assessment Framework: Key Competencies in Reading, Mathematics and Science. OECD, 2009.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.