GIESZCZYŃSKI, W. Academic Conference: Underground Press in the People’s Republic of Poland, Olsztyn, 3-5 November 2010. Echa Przeszłości, [S. l.], n. XII, 2019. Disponível em: https://czasopisma.uwm.edu.pl/index.php/ep/article/view/3349. Acesso em: 20 kwi. 2024.