Abdulmumini Inda, Siti Fatihah Osman, Wan Hassan Wan Embong,. “Critical Thinking Skills of Islamic Education Teachers, and Its Challenges in Enhancing 21st Century Learning Skills”. International Journal of Advanced Science and Technology 29, no. 3 (February 7, 2020): 2000 - 2008. Accessed May 5, 2024. http://sersc.org/journals/index.php/IJAST/article/view/4202.