Juroszek, Weronika, and Mariola Teresa Kozubek. “Self-Education Into Maturity in Light of the Theoretical Approach of Zdzisław Chlewiński”. Journal of Vasyl Stefanyk Precarpathian National University 10, no. 3 (September 30, 2023): 247–257. Accessed November 22, 2024. https://journals.pnu.edu.ua/index.php/jpnu/article/view/7180.