“Startups Uber, Lyft, and Sidecar are revolutionizing Transportation.” Consumer- discretionary. Equities, 23 Jul. 2013. Web. 11 May. 2014
Gladwell, Malcolm. “Chapter 2 and 3.” The Tipping Point: How Little Things Can Make a Big Difference. Boston, Little, Brown, 2000. 31-132. Print
Fahnestock, Jeanne, and Marie Secor. “Chapter 7 Causal Argument.” A Rhetoric of Argument. New York: Random House, 1982. 179-227 . print.
W, Darren. “Lyft Transportation.” Yelp. San Francisco, 11 May. 2014. Web. 11 May. 2014
Tam, Donna. “Ride-sharing service Sidecar lets drivers name their own prices.”Cnet. San Francisco, 19 Feb. 2014. Web. 11 May. 2014
“Uber.” Uber. San Francisco, Web. 11 May. 2014
“Lyft.” Lyft. San Francisco, Web. 11 May. 2014
Fels, Allan. “Consumer First service, safety, choice” Taxi Services commission. taxi.vic, 23, may. 2012. Web. 11 May. 2014
Lawler, Ryan. “Ride-sharing service.” Techcruch. 18 Oct. 2012. Web. 11 May.