Pratopo, L., A. Thoriq, E. Purwanto, and D. Wiradwinanda. “Temperature and PH Monitoring System Design in the Fermentation of Cocoa Beans Based on Android”. Pelita Perkebunan (a Coffee and Cocoa Research Journal), Vol. 38, no. 1, Apr. 2022, pp. 43-53, doi:10.22302/iccri.jur.pelitaperkebunan.v38i1.494.