Maisah, M., Y. Yumesri, F. Fadlilah, and H. Husin. “The Performance of the Headmaster in Improving the Quality of Education at Madrasah Tsanawiyah Negeri 1 Siak”. Edumaspul: Jurnal Pendidikan, Vol. 8, no. 2, Oct. 2024, pp. 4251-8, https://ummaspul.e-journal.id/maspuljr/article/view/8594.