References
- Hall , P. and Lamont , M. 2009 . Successful societies: how institutions and culture affect health . Cambridge : Cambridge University Press .
- Roy , A. 2009 . The 21st-century metropolis: new geographies of theory . Regional Studies , 43 ( 6 ) : 819 – 830 .
- Venkatesh , S. 2006 . Off the books: the underground economy of the urban poor , Cambridge , MA : Harvard University Press .