Wahyuni, Djihan, Eni Sumarminingsih, and Suci Astutik. “Fuzzy Sugeno Method for Opinion Classification Regarding Policy of PPKM and Covid-19 Vaccination”. Jurnal Penelitian Pendidikan IPA 8, no. 5 (November 30, 2022): 2210–2215. Accessed November 22, 2024. https://jppipa.unram.ac.id/index.php/jppipa/article/view/1958.