Zulkarnain, Machfud, Marimin, Emmy Darmawati, and Sugiarto. “ RANCANGAN MODEL PURWARUPA KEMASAN KOPI SPECIALTY”. Jurnal Teknologi Industri Pertanian 30, no. 1 (April 15, 2020). Accessed April 29, 2024. https://jai.ipb.ac.id/index.php/jurnaltin/article/view/31670.