WONG, Veronica; A., Mahendra. Peningkatan Kualitas Pelayanan di UD Jaya Abadi Medan . BISMA Cendekia, [S. l.], v. 3, n. 2, p. 28–32, 2023. Disponível em: https://ojs.politeknikcendana.ac.id/index.php/bisma/article/view/85. Acesso em: 29 jul. 2026.