Mohammad Yazdi Pusadan, Syahrullah, Merry, and Ahmad Imam Abdullah, “k-Nearest Neighbor and Feature Extraction on Detection of Pest and Diseases of Cocoa”, J. RESTI (Rekayasa Sist. Teknol. Inf.) , vol. 6, no. 3, pp. 471–480, Jul. 2022, doi: 10.29207/resti.v6i3.4064.