CIŻKOWICZ, Barbara. Learned Helplessness as a Mediating Variable between the Attributional Style and Academic Achievement. Przegląd Badań Edukacyjnych (Educational Studies Review). Online. 18 December 2017. Vol. 1, no. 24, pp. 79-100. [Accessed 20 July 2024]. DOI 10.12775/PBE.2017.005.