Despa Prasetyo Wardoyo and Fatma Sari Hutagalung 2025. Development Of A Web-Based Expert System For Healthy Diet Menu Recommendations Using The Certainty Factor Method. Jurnal Sahabat ISNU SU . 2, 1 (May 2025), 86–95. DOI:https://doi.org/10.70826/jsisnu.v3i1.1258.