Ruman, Natalia. “Use of Information Technologies in Upper Secondary Education – Practical Inspirations from Karol Miarka Upper Secondary School Complex No. 2 in Pszczyna”. International Journal of Research in E-learning 3, no. 2 (February 1, 2017): 63–74. Accessed May 7, 2025. https://trrest.vot.pl/ojsus/index.php/IJREL/article/view/8404.