LUMBANTORUAN, L. Pengaruh Motivasi dan Disiplin Kerja Karyawan Terhadap Produktivitas Karyawan Pada PT. Cahaya Surya Indah Busana Medan. Journal of Management Science (JMAS), [S. l.], v. 2, n. 4, p. 83–89, 2019. Disponível em: https://exsys.iocspublisher.org/index.php/JMAS/article/view/57. Acesso em: 4 jun. 2026.