1. Beck, U. (1992). Risk society: Towards a new modernity. London: Sage.
2. Bellah, R. N., Madsen, R., Sullivan, W. M., Swidler, A., Tipton, S. M., (1985). Habits of the heart. Berkeley, California: University of California Press.
3. Davis, A. J. & Fowler M. D. (2010). Ethical dilemmas and nursing practice. Upper Saddle River, N. J.: Prentice Hall, Inc.
4. Ministry of Internal Affairs and Communications. Fire and Disaster Management Agency. (2010). [Cited 01 February 2014.] Available from http://www.fdma.go.jp/en
5. Institute of Medicine of the National Academies (2012). Crisis standards of care. A systems framework for catastrophic disaster response. [Cited 01 February 2014.] Available from http://www.iom.edu/Reports/2012/Crisis-Standards-of-Care-A-Systems-Framework-for-Catastrophic-Disaster-Response.aspx.