Muhammad Zahran, Ahmad Nabil Fakhrin Lubis, Muzal Hamdy, Ahmad Daman Huri Ginting, Nurjamiaty. The Contribution of Discipline and Learning Motivation to the Academic Achievement of Grade XII UG D Students at Al Azhar Flagship High School Medan: Penelitian. JERKIN [Internet]. 2026 Jan. 22 [cited 2026 Sep. 16];4(3):18320-4. Available from: https://jerkin.org/index.php/jerkin/article/view/5141