N. Manokaran, Radzi bin Jamaluddin, and Mohd. Rasol bin Abd. Manaf. “ARBORICIDE TRIAL IN A DIPTEROCARP FOREST IN PENINSULAR MALAYSIA”. Journal of Tropical Forest Science (JTFS), vol. 1, no. 4, June 1989, pp. 303-11, https://jtfs.frim.gov.my/jtfs/article/view/2174.