Meechai, Imron, Darunee Yuerae, and Isma-ae Chelong. “Phytochemical analysis screening, antioxidant activity and preparation of lotion containing propolis extract from stingless bee”. Recent Science and Technology 13, no. 2 (July 27, 2021): 408–421. accessed April 25, 2025. https://li01.tci-thaijo.org/index.php/rmutsvrj/article/view/236125.