Lisun, Yanina, and Sabina Sanetra-Półgrabi. “Diagnostics of the Maturity of the Social Media Ecosystem of Educational Services Providers – Perspective of Social Security”. Scientific Journal of Bielsko-Biala School of Finance and Law 29, no. 3 (September 30, 2025). Accessed December 3, 2025. https://www.asej.eu/index.php/asej/article/view/930.