Sumarli, Sumarli, Ahmad Sonhadji K.H, Utami Widiyati, and Imron Arifin. “Instructional Leadership in Character Education Organization at Three Middle Schools in Surabaya, East Java, Indonesia”. Journal of Social Sciences (COES&RJ-JSS) 5, no. 4 (October 1, 2016): 580–594. Accessed May 8, 2024. https://centreofexcellence.net/index.php/JSS/article/view/jss.2016.5.4.580.594.