Sutarna, Nana, and Agus Saeful Anwar. “Value of Character and Philosophy of Life KH. Ahmad Dahlan”. Istawa : Jurnal Pendidikan Islam 5, no. 2 (August 5, 2020): 206–221. Accessed May 8, 2026. https://journal.umpo.ac.id/index.php/istawa/article/view/2558.