Jintalan, Joseph, ve Rodrigo A. Litao. “Sustainability Education and Critical Thinking Integration in General Education”. International Journal of Current Educational Studies (IJCES) 3, no. 2 (Aralık 26, 2024): 51–76. Erişim Temmuz 23, 2025. https://www.ijces.net/index.php/ijces/article/view/146.