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. 437-440
Proceedings of the Malaysian Society of Soil Science Conference 2002 : Applications of Modern Tools in Agriculture: Perlis (Malaysia), 23-24 Apr 2002, p. 196-199
Towards modernisation of research and technology in herbal industries: proceedings of the seminar on medicinal and aromatic plants: Kuala Lumpur (Malaysia), 24-25 Jul 2001, p. 222-226