Sitaresmi Yuningtyas, Syahid Pratama Al-Wali, and Winugroho, “PENENTUAN KADAR KAFEIN KOPI ROBUSTA TERFERMENTASIOLEH Enterococcus durans, Enterococcus sulfureus, DAN Lactococcus garvieae”, ath, vol. 1, no. 2, pp. 80–84, Dec. 2016.