“Cytotoxicity, Antioxidant and Phytochemical Screening of Propolis Extracts from Four Different Malaysian Stingless Bee Species”. Malaysian Journal of Fundamental and Applied Sciences 15, no. 2-1 (May 15, 2019): 307–312. Accessed September 21, 2026. https://mjfas.utm.my/index.php/mjfas/article/view/1542.