Sitompul, M., & Efrida, R. (2018). Evaluasi Ketersediaan Air DAS Deli Terhadap Kebutuhan Air (Water Balanced). Jurnal Rekayasa Sipil (JRS-Unand), 14(2), 121–130. https://doi.org/10.25077/jrs.14.2.121-130.2018