Raharjo, Sabar Budi. “TEACHER’S AND STUDENT’S PERCEPTION OF HEADMASTER’S LEADERSHIP IN SMA NEGERI I KALASAN SLEMAN”. Jurnal Penelitian Kebijakan Pendidikan, vol. 10, no. 3, Apr. 2019, pp. 183-99, https://doi.org/10.24832/jpkp.v10i3.244.