Cobb, Jeff (January 8, 2013). "December 2012 Dashboard". HybridCars.com and Baum & Associates. Retrieved August 31, 2013.
Cobb, Jeff (January 6, 2014). "December 2013 Dashboard". HybridCars.com and Baum & Associates. Archived from the original on January 7, 2014. Retrieved January 6, 2014. See the section: December 2013 Hybrid Car Sales Numbers
McCune, Richard D.; Kusel, Elaine S.; Kim, Jae (Eddie) K. (December 7, 2012). "Class Action Complaint"(PDF). Pitkin v. Ford Motor Company. United States District Court, Eastern District of California: MPGFraud.com. Archived from the original(PDF) on January 6, 2017. Retrieved April 19, 2013.
McCune, Richard D.; Kusel, Elaine S.; Kim, Jae (Eddie) K. (December 7, 2012). "Class Action Complaint"(PDF). Pitkin v. Ford Motor Company. United States District Court, Eastern District of California: MPGFraud.com. Archived from the original(PDF) on January 6, 2017. Retrieved April 19, 2013.
Cobb, Jeff (January 6, 2014). "December 2013 Dashboard". HybridCars.com and Baum & Associates. Archived from the original on January 7, 2014. Retrieved January 6, 2014. See the section: December 2013 Hybrid Car Sales Numbers