Kozerska, Agnieszka, and Dorota Ciechanowska. “Declared Social Engagement As a Factor Differentiating Self-Efficacy in Adult Learning”. Przegląd Badań Edukacyjnych (Educational Studies Review), vol. 1, no. 61, Oct. 2026, pp. 197-06, doi:10.12775/PBE.2026.015.