listya purnamasari, D. S. . Cahyaningrum, M. S. . Sunarno, V. . Pastawan, and E. . Tauik, “Microbiological characteristics of goat’s milk kefir with the addition of mangosteen (Garcinia mangostana L.) peel extract”, Canrea, vol. 3, no. 2, pp. 65–73, Dec. 2020.