Muhammad Zahran, Ahmad Nabil Fakhrin Lubis, Muzal Hamdy, Ahmad Daman Huri Ginting and Nurjamiaty 2026. 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. Jurnal Pengabdian Masyarakat dan Riset Pendidikan. 4, 3 (Jan. 2026), 18320–18324. DOI:https://doi.org/10.31004/jerkin.v4i3.5141.