Organisation for Economic Co-operation and Development. (2013). PISA 2012 results: What students know and can do : student performance in mathematics, reading and science. OECD Publishing.

Organisation for Economic Co-operation and Development. PISA 2012 Results: What Students Know and Can Do : Student Performance in Mathematics, Reading and Science. Paris: OECD Publishing, 2013.

Organisation for Economic Co-operation and Development. PISA 2012 Results: What Students Know and Can Do : Student Performance in Mathematics, Reading and Science. OECD Publishing, 2013.