Proceeding of the 5th MPOB - IOPRI International Seminar : Sustainable Management of Pests and Disease in Oil Palm - the Way Forward: Kuala Lumpur (Malaysia), 22-23 Nov 2013, p. 55-84
Proceedings of The National Seminar on Mechanization in Oil Palm Plantation: Towards Improving Productivity Through Mechanization: Selangor (Malaysia), 30 Jun-1 Jul 1998, p. 106-118