Wijayanti, Ruri, and Malse Anggia. “ANALISIS KADAR KAFEIN, ANTIOKSIDAN DAN MUTU BUBUK KOPI BEBERAPA INDUSTRI KECIL MENENGAH (IKM) DI KABUPATEN TANAH DATAR [Analysis of Cafein, Antixidant and Quality Levels Coffee Powder of Some Medium Small Industries (IKM) In the Tanah Datar Regency]”. Jurnal Teknologi & Industri Hasil Pertanian 25, no. 1 (January 7, 2020): 1–6. Accessed December 8, 2025. http://jurnal.fp.unila.ac.id/index.php/JTHP/article/view/3196.