Genta Haru Purwanto, Irfandi. Development of an Alumni Based Islamic Boarding School at the Hadirul Ulum Islamic Boarding School. alfahim [Internet]. 2026 Sep. 30 [cited 2026 Nov. 10];8(2):194-213. Available from: https://staitbiasjogja.ac.id/jurnal/index.php/alfahim/article/view/2804