Suhandy, Diding, and Meinilwita Yulia. “Klasifikasi Kopi Bubuk Spesialti Kalosi Dan Toraja Menggunakan UV-Visible Spectroscopy Dan Metode PLS-DA”. Jurnal Ilmu Pertanian Indonesia 24, no. 1 (February 13, 2019): 73–81. Accessed December 24, 2025. https://journal.ipb.ac.id/JIPI/article/view/25191.