Tathaporn Maison, Hugo Volkaert, Unaroj Boonprakob, & Yingyong Paisooksantivatana. (2005). Genetic Diversity of Andrographis paniculataWall. ex Nees as Revealed by Morphological Characters and Molecular Markers. Agriculture and Natural Resources, 39(3), 388–399. retrieved from https://li01.tci-thaijo.org/index.php/anres/article/view/243337