“The 8th International Conference on „Lifelong Learning: Continuous Education for Sustainable Development” Sankt Petersburg, 3-5 czerwca 2010 r”., szp, no. 1, pp. 161–163, Sep. 2010, Accessed: Feb. 09, 2026. [Online]. Available: https://czasopisma.ukw.edu.pl/index.php/szp/article/view/414