NAFIS, Muhammad Durrun; DARMAWAN, Puguh. Analisa Faktor Penyebab Kesulitan Belajar Matematika Siswa Kelas IX di MTs Shifa’ Kalipare. Venn: Journal of Sustainable Innovation on Education, Mathematics and Natural Sciences, [S. l.], v. 4, n. 1, p. 1–7, 2025. DOI: 10.53696/venn.v4i1.213. Disponível em: https://journal.web.id/journals/venn/article/view/213. Acesso em: 7 oct. 2026.