Walangitan, Rafaely Hesky, Patmawati Hasan, and Emy Lenora Tatuhey. 2024. “Sistem Pakar Diagnosis Dini Penyakit Lambung Menggunakan Metode Certainty Factor”. Progresif: Jurnal Ilmiah Komputer 20 (2):605-17. https://doi.org/10.35889/progresif.v20i2.1941.