Hasibuan, M. S., Yasni, S., Bintang, M., & Ranti, A. S. (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), 178-191. https://doi.org/10.5614/j.math.fund.sci.2016.48.2.8