REZEKI, Sabrini Mentari. CASE STUDY OF UNDERACHIEVER STUDENTS IN FOUNDATION HIGH SCHOOL OF HARAPAN MANDIRI MEDAN. Psikologi Prima, [S. l.], v. 2, n. 2, p. 129–135, 2020. Disponível em: https://jurnal.unprimdn.ac.id/index.php/Psikologi/article/view/876. Acesso em: 25 oct. 2025.