1. A. Faiz, C.S. Weaver, M.P. Walsh, Air Pollution from Motor Vehicles: Standards and Technologies for Controlling Emissions (World Bank Publications, p. 227) ISBN 978-0-8213-3444-7 (1996)
2. Obama Administration Announces Federal and Private Sector Actions to Accelerate Electric Vehicle Adoption in the United States
3. EU Policy-Makers Seek to Make Electric Transport a Priority
4. Auto & Mobility Trends in 2019, CB Insights Research. Hyundai KONA Electric Highlights | SUV | Hyundai Motor India (Hyundai Motors, 2019)
5. Mahindra Electric Launches eVerito.carindia.in