Hasibuan, Mega Safithri, Sedarnawati Yasni, Maria Bintang, and Anna Setiadi Ranti. 2016. “Antihyperglycemic Activity of Piper Crocatum Leaves and Cinnamomum Burmannii Bark Mixture Extract in Streptozotocin-Induced Diabetic Rats”. Journal of Mathematical and Fundamental Sciences 48 (2):178-91. https://doi.org/10.5614/j.math.fund.sci.2016.48.2.8.