Hanim, Zaenab, Kaolan Kaolan, Adam Juit, Jati Kesuma, and Rahmat Soeoed. 2022. “Leadership of the Principal in Planning the Internal Quality Assurance System at Islamic Elementary School ”. EduLine: Journal of Education and Learning Innovation 2 (3):331-38. https://doi.org/10.35877/454RI.eduline1236.