Juhartini, J., Arwidiyarti, D. and Subki, A.S. 2022. DISEASE DETECTION EXPERT SYSTEM IN WATERMELON PLANTS USING CERTAINTY FACTOR METHOD BASED ON MOBILE. Jurnal Pilar Nusa Mandiri. 18, 2 (Sep. 2022), 153-160. DOI:https://doi.org/10.33480/pilar.v18i2.3326.