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Sources
- AAA. "AAA's Daily Fuel Gauge Report." (July 15, 2010) http://www.fuelgaugereport.com/
- MapQuest. "National Gas Prices." (July 15, 2010) https://gasprices.mapquest.com/
- OPISNet. "Petroleum News and Pricing." (July 15, 2010) http://www.opisnet.com/
- United States Environmental Protection Agency. "Links to Gasoline Price Data for U.S. Cities." (July 15, 2010) http://www.fueleconomy.gov/feg/gasprices/states/index.shtml
- Vanderwerp, Dave. "The Truth About EPA City / Highway MPG Estimates - Feature." CarAndDriver.com. August 2009. (July 15, 2010) http://www.caranddriver.com/features/09q3/the_truth_about_epa_city_highway_mpg_estimates-feature
- Woolsey, Matt. "The most expensive cities to buy gas in the U.S." MSNBC.com. Dec. 4, 2007. (July 15, 2010) http://www.msnbc.msn.com/id/22085640/