Sake Juli Martina, P. A. P. . Govindan, and A. S. Wahyuni, “The Difference in Effect of Arabica Coffee Gayo Beans and Leaf (Coffea Arabica Gayo) Extract on Decreasing Blood Sugar Levels in Healthy Mice”, Open Access Maced J Med Sci, vol. 7, no. 20, pp. 3363–3365, Oct. 2019.