Berman, B. (2008). Hybrid cars. Hybridcars.com. Retrieved September 18, 2008, from http://www.hybridcars.com/.
Bullis, K. (2007). Electronic cars 2.0. Technology Review (MIT). Retrieved September 19, 2008, from Academic Search Premier database.
Carr-Ruffino, N. & Acheson, J. (2007). The hybrid phenomenon. The Futurist¸41(4), 16-22. Retrieved September 19, 2008, from Academic Search Premier database.
Fletcher, S. (2008). Tomorrow’s hybrid. Popular Science, 272 (4) 50-51. Retrieved on September 19, 2008, from Academic Search Premier database.
Hoyer, K. G. (2007). The history of alternative fuels in transportation: The case of electric and hybrid cars. Utilities Policy, 16, 63-71. Retrieved September 19, 2008, from Academic Search Premier database.
Murray, C. J. (2008). The economics of buying a hybrid. Design News. Retrieved September 19, 2008, from Academic Search Premier database.
Ogando, J. (2007). A different kind of hybrid. Design News. Retrieved September 19, 2008, from Academic Search Premier database.
Rockhold, J. (2005). The hybrid revolution. Mother earth news. Retrieved September 24, 2008, from Academic Search Premier database.
Yost, N. (2006). The essential hybrid car handbook: A buyer’s guide. Connecticut: The Lyons Press.
The dollars and sense of owning a hybrid. (2006). Consumer Reports. Retrieved September 19, 2008, from Academic Search Premier database.