SZOSTKIEWICZ, Alicja. Educational Activity of Adults in the Field of Informal Education. INSTED: Interdisciplinary Studies in Education & Society, [S. l.], v. 21, n. Specjalny, p. 85–99, 2018. Disponível em: https://insted-tce.pl/ojs/index.php/tce/article/view/209. Acesso em: 9 dec. 2024.