Khumchompoo, S., and A. Thongpukdee. “Polyalthia Kanchanaburiana (Annonaceae): A New Species from Thailand”. Thai Forest Bulletin (Botany), no. 33, Dec. 2014, pp. 35-41, https://li01.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/24293.