Thummajitsakul, Sirikul, Worrapan Sitthithaworn, and Kun Silprasit. 2019. “High Performance Thin Layer Chromatography Fingerprint and Antioxidant Activities of Cyclea Barbata in Thailand”. Agriculture and Natural Resources 53 (5). Bangkok, Thailand:479-86. https://li01.tci-thaijo.org/index.php/anres/article/view/225131.