CIŻKOWICZ, B. Validation of the Short School Helplessness Scale (SBS-S). Przegląd Badań Edukacyjnych (Educational Studies Review), [S. l.], v. 1, n. 32, p. 251–270, 2021. DOI: 10.12775/PBE.2021.015. Disponível em: https://apcz.umk.pl/PBE/article/view/35166. Acesso em: 26 apr. 2024.