Nansia, Oktavio, and Bosker Sinaga. “Expert System Diagnose Disease in Poultry Using Certainty Factor Method”. Journal of Computer Networks, Architecture and High Performance Computing 2, no. 1 (January 1, 2020): 167–170. Accessed May 23, 2026. https://itscience-indexing.com/jurnal/index.php/CNAPC/article/view/387.