S.A, A., H. E.H, J. L.D, M. L, and yah, Y. Maolana. “Indonesian Rainforest Plants - Chemodiversity and Bioactivity”. Malaysian Journal of Science, vol. 24, no. 1, Jan. 2005, pp. 7-16, http://mjs.um.edu.my/index.php/MJS/article/view/10445.