ŁUKASIK, Izabella Maria. Student Well-Being in the Context of Erik Allardt’s Theory of Welfare and Urie Bronfenbrenner’s Ecological Systems Theory of Development. Przegląd Badań Edukacyjnych (Educational Studies Review). Online. 16 December 2021. Vol. 2, no. 35, pp. 197-212. [Accessed 7 February 2026]. DOI 10.12775/PBE.2021.039.