Ahmad, Bonaventura Ngarawula, and Mohammad Roseli, “The Role of Leadership of Kyai as the Caretaker of Islamic Boarding Schools in Building Social Piety : Study at Miftahul Ulum Bettet Islamic Boarding School, Pamekasan, Madura”, ijrss, vol. 6, no. 11, pp. 11–41, Nov. 2025.