DERBY KHOIRULLOH SESANDI. Penerapan Sistem Marketing Digital dan Non-Digital pada Perusahaan PDAM. OPTIMAL Jurnal Ekonomi dan Manajemen, [S. l.], v. 3, n. 3, p. 20–24, 2023. DOI: 10.55606/optimal.v3i3.1786. Disponível em: https://researchhub.id/index.php/optimal/article/view/1786. Acesso em: 30 apr. 2025.