TAMMAR, A. Halal Product System and Certification. Journal of Halal Sciences, [S. l.], v. 1, n. 1, p. 31–39, 2024. DOI: 10.15642/johs.2024.1.1.31-39. Disponível em: https://jurnallppm.uinsa.ac.id/index.php/josh/article/view/23. Acesso em: 21 mar. 2026.