Teerawatananon, A., and S. Sungkaew. “Tripogon Purpurascens (Chloridoideae: Poaceae): A Native Thai Grass Recently Recognized”. Thai Forest Bulletin (Botany), no. 40, Nov. 2014, pp. 130-3, https://li01.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/24168.