AJIB, qholib; RAHMI, M. Analisis Desain Produk dan Value Engineering Untuk Optimalisasi Nilai Tambah (UMKM Batik Gambir Di Lima Puluh Kota). Journal of Science Education and Management Business, [S. l.], v. 5, n. 2, p. 745–753, 2026. DOI: 10.62357/joseamb.v5i2.1072. Disponível em: https://rcf-indonesia.org/jurnal/index.php/JOSEAMB/article/view/1072. Acesso em: 2 sep. 2026.