Maisah, Maisah, Yumesri Yumesri, Fadlilah Fadlilah, and Husin Husin. 2024. “The Performance of the Headmaster in Improving the Quality of Education at Madrasah Tsanawiyah Negeri 1 Siak”. Edumaspul: Jurnal Pendidikan 8 (2), 4251-58. https://ummaspul.e-journal.id/maspuljr/article/view/8594.