K Norizah, I Mohd-Hasmadi, S Husna, and W Chung. 2016. “LOG HAULING PRODUCTIVITY IN TIMBER HARVESTING OPERATION IN PENINSULAR MALAYSIA FOREST”. Journal of Tropical Forest Science (JTFS) 28 (3):207-16. https://jtfs.frim.gov.my/jtfs/article/view/857.