Aditia, Mellya Rindhani, Dinda Djesmedi, Fitri Firdalius, and Hari Marfalino. 2022. “EXPERT SYSTEM TO DIAGNOSE DIGESTIVE DISEASES USING CERTAINTY FACTOR”. JURTEKSI (jurnal Teknologi Dan Sistem Informasi) 9 (1), 97 - 102. https://doi.org/10.33330/jurteksi.v9i1.1880.