1. ACEA, 2014. ACEA tax guide 2014. European Automobile Manufacturers Association. (accessed on October 5, 2014).
2. Cain, Timothy, 2013 year end U.S. passenger car sales ranking- top 158 best-selling cars in America. (accessed on Mar 27, 2015).
3. Cain, Timothy, 2014 year end U.S. passenger car sales ranking- top 157 best-selling cars in America. (accessed on Mar 27, 2015).
4. CATARC, 2014. Annual Report on Automotive Energy-Saving in China (2014). China Automotive Technology and Research Center.