S. . Habibie, Y. . Tristiyanti, D. Gustiono, M. E. . Harahap, S. Y. . Chalid, and D. . Effendi, “Production and Characterization of Scaffold made of Hydroxyapatite and Pectin of Green Cincau Leaf (Premna Oblongifolia Merr)”, JESR, vol. 1, no. 1, pp. 12–16, Dec. 2020.