Rafif Fauzan Ridwan, et al. “The Expert Expert System for Diagnosing Pests and Diseases of Citrus Plants Certainty Factor Method Based on Android”. Framework : Jurnal Ilmu Komputer Dan Informatika, vol. 1, no. 1, Dec. 2022, pp. 23-33, doi:10.33506/jiki.v1i1.2144.