Schleicher, A. (2009). PISA 2009 assessment framework: Key competencies in reading, mathematics and science ([1st ed.].). OECD. https://doi.org/10.1787/9789264062658-en
Chicago Style (17th ed.) CitationSchleicher, Andreas. PISA 2009 Assessment Framework: Key Competencies in Reading, Mathematics and Science. [1st ed.]. Paris: OECD, 2009. https://doi.org/10.1787/9789264062658-en.
MLA (9th ed.) CitationSchleicher, Andreas. PISA 2009 Assessment Framework: Key Competencies in Reading, Mathematics and Science. [1st ed.]. OECD, 2009. https://doi.org/10.1787/9789264062658-en.
Warning: These citations may not always be 100% accurate.