1. Abdullah, F. (2000). Mapping of the incidence of basal stem rot of oil palms (Elaeis guineensis) on a former coconut (Cocos nucifera) plantation. In J. Flood, P. D. Bridge, & M. Holderness (Eds.), Ganoderma diseases of perennial crops (pp. 183–194). Wallingford: CABI Publishing.
2. Azahar, T. M., Boursier, P., & Seman, I. A. (2008). Spatial analysis of basal stem rot disease using geographical information system. In: Map Asia 2008, 18–20 August 2008, Kuala Lumpur, Malaysia. http://www.gisdevelopment.net/proceedings/mapasia/2008/ .
3. Azahar, T. M., Seman, I. A., & Boursier, P. (2009). Spatial and hotspots analysis of basal stem rot disease in oil palm plantations: An analysis on peat soil. In: Map Asia 2009, 18–20 August 2008, Singapore. http://mapasia.org/2009/proceeding/proceeding.htm .
4. Coops, N. C., Johnson, M., Wulder, M. A., & White, J. C. (2006). Assessment of QuickBird high spatial resolution imagery to detect red attack damage due to mountain pine beetle infestation. Remote Sensing of Environment, 103, 67–80.
5. Corley, R. H. V., Hardon, J. J., & Wood, B. J. (Eds.). (1976). Oil palm research. Amsterdam: Elsevier.