EGELUND, Niels. PISA (Programme for International Student Assessment) – 2009. MONA - Matematik- og Naturfagsdidaktik, [S. l.], n. 1, 2011. DOI: 10.7146/mona.v0i1.36125. Disponível em: https://tidsskrift.dk/mona/article/view/36125. Acesso em: 5 dec. 2025.