Thing, Tee Chuan, Lee Yean Shan, Tan Siow Ping, Khalijah Awang, Mohd Azlan Nafiah, and Kartini Ahmad. “Phytochemical Study of Stem Bark from Alstonia Spathulata Bl. (Apocynaceae) (8 - 15)”. EDUCATUM Journal of Science, Mathematics and Technology 1, no. 2 (December 4, 2014): 8–15. Accessed December 20, 2024. https://ojs.upsi.edu.my/index.php/EJSMT/article/view/19.