Hannisa Kautsarani Hamidah, et al. “Development of a Prototype System for Monitoring and Controlling Apple Cider Vinegar Fermentation Using IoT-Based Fuzzy Methods”. International Journal of Mechanical, Electrical and Civil Engineering, vol. 1, no. 3, July 2024, pp. 138-5, doi:10.61132/ijmecie.v1i3.35.