1. Arendt, H. (1958). The human condition. Chicago: The University of Chicago Press.
2. Barnes, T. (2009). Neo-classical economics. In D. Gregory, R. Johnston, G. Pratt, M. Watts & S. Whatmore (Eds.), The dictionary of human geography (5th ed., pp. 495–496). Chichester: Wiley-Blackwell.
3. Beauregard, R. A. (2012). What theorists do. Urban Geography, 33(4), 474–487.
4. Beck, U. (2009). World at risk. Cambridge: Polity.
5. Beck, U. (2010). Climate for change, or how to create a green modernity? Theory, Culture & Society, 27(2–3), 254–266.