Textbook approval systems and the Program for International Assessment (PISA) results: A preliminary analysis. IARTEM e-journal, Kongsberg, Norway, v. 4, n. 2, p. 63–74, 2012. DOI: 10.21344/iartem.v4i2.777. Disponível em: https://iartemejournal.org/index.php/IARTEM/article/view/777.. Acesso em: 7 jul. 2024.