DŁUGOSZ, Piotr. Effect of Turning - a Case of Polish Educational System. INSTED: Interdisciplinary Studies in Education & Society, [S. l.], v. 16, n. 3(63), p. 89–110, 2013. Disponível em: https://insted-tce.pl/ojs/index.php/tce/article/view/56. Acesso em: 8 jun. 2025.