References
"How Fuel Cells Work", HowStuffWorks, by Karim Nice. HowStuffWorks, Inc., 2004
"How Hybrid Cars Work", HowStuffWorks, by Karim Nice. HowStuffWorks, Inc., 2004
Haverdink, William H. "Electric car." World Book Online Reference Center . 2005. World Book, Inc. 2 Mar. 2005.
Papalambros, Panos Y. "Hybrid car." World Book Online Reference Center . 2005. World Book, Inc. 2 Mar. 2005.
White, Ralph E. "Fuel cell." World Book Online Reference Center . 2005. World Book, Inc. 2 Mar. 2005.
"Electric Car," Microsoft® Encarta® Online Encyclopedia 2005. © 1997-2005 Microsoft Corporation. All Rights Reserved.
"What is a Fuel Cell?" Bull Electrical . 2 Mar. 2005 http://bullnet.co.uk/shops/test/hydrogen.htm.
California State University, Dominquez Hills . 2 Mar. 2005 http://www.csudh.edu/soe/Chaut2004/Image%20Pages/FuelCellPowerPlant.html.
National Hydrogen Association. 2 Mar 2005. http://www.hydrogenassociation.com
Stirling Energy Systems. 2 Mar 2005. http://www.stirlingenergy.com
"Hydrogen and Future Energy Sources". The Energy Story. 3 Mar. 2005. http://www.energyquest.ca.gov/story/chapter20.html
"How Electric Cars Work". HowStuffWorks, by Marshall Brain. HowStuffWorks, Inc., 2004
Natural Gas. 3 Mar. 2005. http://www.naturalgas.org/
Petroleum. 3 Mar. 2005. http://www.eia.doe.gov/oil_gas/petroleum/info_glance/petroleum.html
"How Gasoline Works". HowStuffWorks, by Marshall Brain. HowStuffWorks, Inc., 2004
Natural Gas. U. S. Department of Energy Alternative Fuels Data Center. 2 Mar. 2005 http://www.eere.energy.gov/afdc/altfuel/natural_gas.html
"Natural Gas". Wikipedia, the Free Encyclopedia. 3 Mar. 2005 http://en.wikipedia.org/wiki/Natural_gas#Safety
"The Advantages of Natural Gas". PSEG. 3 Mar. 2005 http://www.pseg.com/customer/business/industrial/convert/advantages.jsp
Chambers, Ann. Natural Gas and Electrical Power in Nontechnical Language . Tulsa: PennWell Publishing Company, 1999.