Pulungan, A.F., Rosaldi, H. and Rani , Z. 2024. Analysis of paracetamol and caffeine contents in tablet preparations using zero-crossing derivative spectrophotometry method. Journal of Pharmaceutical and Sciences. 7, 3 (Aug. 2024), 323–332. DOI:https://doi.org/10.36490/journal-jps.com.v7i3.489.