Kozerska, A. and Ciechanowska, D. 2026. Declared Social Engagement as a Factor Differentiating Self-Efficacy in Adult Learning. Przegląd Badań Edukacyjnych (Educational Studies Review). 1, 61 (Oct. 2026), 197–206. DOI:https://doi.org/10.12775/PBE.2026.015.