“β-Sitosterol Compound from Dichloromethane Extracts of Kalanchoe Tomentosa (Crassulacea) Leaves and Inhibition of α-Amilase Activity”. 2021. Jurnal Kimia Valensi 7 (1): 69-74. https://doi.org/10.15408/jkv.v7i1.18443.