1. https://www.silicon-mobility.com/increasing-the-range-of-ev-with-the-same-battery-part-i-the-efficiency/
2. United States Environmental Protection Agency (EPA) (2021) . Available: https://www.epa.gov/greenvehicles/ explaining-electric-plug-hybrid-electric vehicles
3. Matulka R (2014) Energy.GOV,” U.S Department of Energy. Available: https://www.energy.gov/articles/history- electric-car
4. "ExpatGo (2013). Available: http://www.expatgo.com/my/2013/08/17/electric-car-malaysia/
5. Scholarly Community Encyclopedia (2022). Available: https://encyclopedia.pub/entry/22506