Template:Ashton, 2004
- Ashton, P.S. 2004. Dipterocarpaceae. Pp. 63–388 in Soepadmo, E., Saw, L.G. & Chung, R.C.K. (eds.), Tree Flora of Sabah and Sarawak, Vol. 5. Sabah Forestry Department, Forest Research Institute Malaysia (FRIM), Sarawak Forestry Department. ISBN 978-983-2181-59-0. PDF.