N.P.D SINAGA, B. .; GIRSANG, B. .; SIMBOLON, E. .; S. SITUMORANG, L. .; J. NABABAN, Y. . Program Bimbingan Gratis Matematika di SMA Negeri 1 Pegagan Hilir. Jurnal Pengabdian Masyarakat Bestari, [S. l.], v. 1, n. 5, p. 241–248, 2022. DOI: 10.55927/jpmb.v1i5.964. Disponível em: https://journal.formosapublisher.org/index.php/jpmb/article/view/964. Acesso em: 6 may. 2026.