Abriyani, E., Alisthipa Sephia, R. ., Srifitriani, E. ., Lustianah, T. ., & Khafina Azzahra, S. . (2022). Analisis Kadar Kafein Kopi, Teh, Dan Coklat Menggunakan Metode Spektrofotometri Uv-Vis . Journal of Comprehensive Science (JCS), 2(1), 7–15. https://doi.org/10.59188/jcs.v2i1.178