Niko Ramot Saragi, Arnes Sembiring, Nurhayati. Expert System To Diagnose The Feasibility Of Drinking Water For Consumption Using Certainty Factor Method In Pdam Tirta Sari Kota Binjai. IJHET [Internet]. 2022 Jul. 29 [cited 2024 Oct. 2];1(2). Available from: https://afdifaljournal.com/journal/index.php/ijhet/article/view/29