Kurnia, Yulianti Fitri, Sedarnawati Yasni, and Budi Nurtama. 2014. “Optimation Formula of Goat Milk Yoghurt and White Oyster Mushroom Powder With Mixture Design Methods”. Pakistan Journal of Nutrition 13 (5): 296–302. https://doi.org/10.3923/pjn.2014.296.302.