panggabean, jonas, and Aditiarno Manik. 2021. “Expert System For Diagnosis Of Vitiligo Disease Using The Fuzzy Mamdani Method Based On Web-Based”. Jurnal ICT : Information and Communication Technologies 12 (1):1-12. https://www.ejournal.marqchainstitute.or.id/index.php/JICT/article/view/10.