“PERHITUNGAN KEBUTUHAN AIR BERSIH PDAM TIRTA KUALO KOTA TANJUNGBALAI”. Jurnal Bidang Aplikasi Teknik Sipil Dan Sains (BATAS), vol. 2, no. 2, June 2023, pp. 48-57, https://jurnal.una.ac.id/index.php/batas/article/view/3421.