A. M. A. Suryadi, W. V. Solang, and M. A. Paneo, “Characterization of Methanol Fraction Compounds from Formulation Chinese Senna Leaves (Cassia Alata L.) Using UV-Vis Spectrophotometry Method”, JFTSK, vol. 2, no. 3, pp. 166–174, Oct. 2025.