Wongklom, Amornrat. 2018. “Effect of drying methods on antioxidant capacity, total phenolic and flavonoid contents of Phakwan (Sauropus androgynus (L.) Merr.) powder”. Creative Science 10 (2):96-103. https://ph01.tci-thaijo.org/index.php/snru_journal/article/view/119201.