Proceedings 4th Malaysian International Cocoa Conference: Sustainable Cocoa Economy Through Increase in Productivity, Efficiency and Quality: Kuala Lumpur (Malaysia), 18-19 Jul 2005, p. 646-652
Herbal Globalisation : A New Paradigm for Malaysian Herbal Industry : Proceedings of the Seminar on Medicinal and Aromatic Plants (MAPS 2008): Kuala Lumpur (Malaysia), 21-22 Oct 2008, p. 303