“β-Sitosterol Compound from Dichloromethane Extracts of Kalanchoe Tomentosa (Crassulacea) Leaves and Inhibition of α-Amilase Activity”. Jurnal Kimia Valensi, vol. 7, no. 1, July 2021, pp. 69-74, https://doi.org/10.15408/jkv.v7i1.18443.