ABDULLAH, W. PERAMALAN PENJUALAN AIR BERSIH DAN FORMULASI STRATEGI PERUSAHAAN DAERAH AIR MINUM. Jurnal Ekonomi & Studi Pembangunan, [S. l.], v. 15, n. 1, p. 78–96, 2014. Disponível em: https://journal.umy.ac.id/index.php/esp/article/view/1267. Acesso em: 11 may. 2025.