Perdana, Nusa Ichdia Hady, Reno Tanfidz, Stevila, and Siti Aisyah. “Implementation of Expert System in Diagnosing Torch Disease Using The Certainty Factor Method”. Jurnal Mantik 4, no. 4 (February 28, 2021): 2682-2686. Accessed August 4, 2026. https://iocscience.org/ejournal/index.php/mantik/article/view/1238.