Wong, Sin Yeng. “Additions to the ‘Flora of Borneo: The Vascular Plant genera’ — I: Chewlunia (Rubiaceae) and Zygogynum (Winteraceae)”. Webbia 79, no. 1 (March 19, 2024): 51–52. Accessed May 17, 2024. https://oaj.fupress.net/index.php/webbia/article/view/15522.