Pato, U., Yusuf, Y., Rossi, E., Yunaira, R ., and Githasari, T. “Quality of probiotik fermented milk using Lactobacillus casei subsp. casei R-68 as a starter with the variation of skim milk and sucrose”. International Journal of Agricultural Technology 13, no. 1 (January 20, 2017): 37–46. accessed August 26, 2025. https://li04.tci-thaijo.org/index.php/IJAT/article/view/6710.