1. The future of standards
2. Economic Planning Unit. Study on energy policy analysis and planning to the year 2020. Kuala Lumpur: Prime Minister Department; 1996.
3. Ministry of Energy. National energy balance Malaysia 1980–2000. Kuala Lumpur; 2001.
4. Department of Statistics. General report of population census. Kuala Lumpur: Department of Statistics; 1991.
5. Department of Electricity and Gas Supply. Forum on energy performance and labeling standard for refrigerators. Kuala Lumpur; 2000.