GINTING, Agni Anggita Br; TAMBUNAN, Dian Petrishia; PURBA, Nopra; TARIGAN, Stefani Br. Permasalahan Keterlambatan Siswa Yang Berulang: Studi Kasus Di SMK Swasta Mandiri Deli Serdang. Indonesian Journal of Innovation Multidisipliner Research, [S. l.], v. 4, n. 2, p. 3356–3368, 2026. DOI: 10.69693/ijim.v4i2.851. Disponível em: https://multidisipliner.org/ijim/article/view/851. Acesso em: 9 oct. 2026.