ABDUSSAKIR, A. Umat Islam Wajib Menguasai Matematika. Beta: Jurnal Tadris Matematika, [S. l.], v. 2, n. 2, p. 33–43, 2009. Disponível em: https://jurnalbeta.ac.id/index.php/betaJTM/article/view/408. Acesso em: 23 jul. 2026.