KHASANAH, R. N.; PURWOKO, T.; SUSILOWATI, A. Vitamin C Content in Yogurt With the Addition of Tawangmangu Tangerine Juice (Citrus Nobilis Var. Tawangmangu). Nusantara Biosci 2016, 7 (2). https://doi.org/10.13057/nusbiosci/n070215.