Prastiyo, S. ., Maghfiroh, C. N. ., & Khafidhoh, N. . (2022). Sweet Potato Pest Diagnosis Expert System (Ipomoea Batatas) with Forward Chaining Method and Certainty Factor. TIERS Information Technology Journal, 3(1), 48-58. https://doi.org/10.38043/tiers.v3i1.3618