Proceedings of the Soils Science Conference of Malaysia 2008: Sustaining Soil Ecosystems with Emphasis on Coastal Soils: Perak (Malaysia), 15-17 Apr 2008, p. 21-25
Proceedings of the Malaysian Society of Soil Science Conference 2002 : Applications of Modern Tools in Agriculture: Perlis (Malaysia), 23-24 Apr 2002, p. 133-140
Proceedings of the Soils Science Conference of Malaysia 2008: Sustaining Soil Ecosystems with Emphasis on Coastal Soils: Perak (Malaysia), 15-17 Apr 2008, p. 18-20
Proceedings of the Soils Science Conference of Malaysia 2008: Sustaining Soil Ecosystems with Emphasis on Coastal Soils: Perak (Malaysia), 15-17 Apr 2008, p. 1-3