Speck, J. (2012). Walkable city: How downtown can save america, one step at a time.
Cita Chicago Style (17a ed.)Speck, Jeff. Walkable City: How Downtown Can Save America, One Step at a Time. 2012.
Cita MLA (8a ed.)Speck, Jeff. Walkable City: How Downtown Can Save America, One Step at a Time. 2012.
Precaución: Estas citas no son 100% exactas.