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. Jurnal Pengabdian Masyarakat dan Riset Pendidikan, [S. l.], v. 4, n. 3, p. 18320–18324, 2026. DOI: 10.31004/jerkin.v4i3.5141. Disponível em: https://jerkin.org/index.php/jerkin/article/view/5141. Acesso em: 17 sep. 2026.