W.J.J.O. De Wilde, and Brigitta E.E. Duyfjes. “Key and Checklist of Xanthophyllum (Polygalaceae) of Borneo”. Reinwardtia 13, no. 1 (July 17, 2025): 79–86. Accessed June 18, 2026. https://biologyjournal.brin.go.id/index.php/reinwardtia/article/view/339.