Ellisa Vista Thenu, and Yos Sunitiyoso. “Identifying Key Driving Factors and Critical Uncertainties in the Future of Non-Formal Foreign Language Education Industry in Jabodetabek, Indonesia”. EduInovasi:  Journal of Basic Educational Studies 5, no. 2 (April 25, 2025): 813 –. Accessed May 12, 2026. https://journal-laaroiba.com/ojs/index.php/edu/article/view/7444.