MUTTAQIN, Firman; HUDA, Nuril. The Effect of Implementing Good Manufacturing Practices and Having a Halal Certificate on Competitiveness and Marketing Performance . JENIUS (Jurnal Ilmiah Manajemen Sumber Daya Manusia), [S. l.], v. 9, n. 1, p. 31–43, 2025. DOI: 10.32493/JJSDM.v9i1.52273. Disponível em: https://openjournal.unpam.ac.id/index.php/JJSDM/article/view/52273. Acesso em: 5 mar. 2026.