NordahlDarrin. 2009. My Kind of Transit: Rethinking Public Transportation in America. Washington, DC: Island Press.
4.
SivakMichaelSchoettleBrandon. 2012. Update: Percentage of young persons with a driver’s license continues to drop. Traffic Injury Prevention13 (4): 341.
5.
SpeckJeff. 2012.Walkable City: How Downtown Can Save America One Step at a Time. New York: Farrar, Straus, Giroux.
6.
TaylorBrianMillerDouglasIsekiHiroyukiFinkCamille. 2009. Nature and/or nurture? Analyzing the determinants of transit ridership across U.S. urbanized areas. Transportation Research Part A43:60–77.