Maisyatus Suadaa Irfana, et al. “The Roles of Leadership in Formal School ‘unggul’ Under the Auspices of Islamic Boarding School”. Kurdish Studies, vol. 11, no. 2, Dec. 2023, pp. 5182-95, https://kurdishstudies.net/menu-script/index.php/KS/article/view/1117.