ANTONIUS KAP SIMBOLON. ANALISIS KEBUTUHAN BAHAN AJAR MATEMATIKA SISWA SMP KELAS VIII. Nusantara Hasana Journal, [S. l.], v. 3, n. 12, p. 21–29, 2024. DOI: 10.59003/nhj.v3i12.1126. Disponível em: https://ejournal.nusantarahasanajournal.com/index.php/nhj/article/view/1126. Acesso em: 11 sep. 2025.