PURBA, C. N.; SINAGA, N. Y. .; SARAGIH, S. S.; SARAGIH, M. C. .; SIDABUTAR, A. D. .; PARINDURI, D. . Meningkatkan Kemampuan Belajar Siswa dengan Kursus Gratis di SMP Swasta GKPS 6 Haranggaol. Jurnal Pengabdian Masyarakat Bestari, [S. l.], v. 1, n. 4, p. 189–198, 2022. DOI: 10.55927/jpmb.v1i4.839. Disponível em: https://journal.formosapublisher.org/index.php/jpmb/article/view/839. Acesso em: 4 may. 2026.