Hadistio, Ryan Rinaldi, Windi Saputri Simamora, and Abdul Muis. “Development of Android-Based Smart System for Gingivitis Diagnosis Using Certainty Factor”. Sinkron : jurnal dan penelitian teknik informatika 8, no. 1 (January 12, 2024): 556-563. Accessed October 7, 2025. https://jurnal.polgan.ac.id/index.php/sinkron/article/view/13361.