Puff, C. “Kohautia Cham. & Schltdl. (Rubiaceae) – a New Genus Record for the Flora of Thailand: K. Gracilis (Wall.) DC. Discovered in Kanchanaburi”. Thai Forest Bulletin (Botany), no. 41, Nov. 2014, pp. 56-60, https://li01.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/24105.