Azmi, Diinu Tsabitul, Syifa Nur Azzizah, and Diva Ikrimah. “Character Formation Model in Islamic Education: A Comparative Study of Hamka’s and Said Nursi’s Concept of Tazkiyatun Nafs”. Indonesian Journal of Interdisciplinary Islamic Studies (IJIIS) 8, no. 2 (December 30, 2025). Accessed January 9, 2026. https://journal.uii.ac.id/IJIIS/article/view/42602.