1. What is a Natural Hazard? GEOG 30N: Environment and Society in a Changing Worldhttps://www.e-education.psu.edu/geog30/node/378
2. Natural Disasters in 2017: Lower Mortality, Higher Cost 2018https://www.google.com.hk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwiwpp-OwvD4AhVH43MBHQFSAz8QFnoECAMQAQ&url=https%3A%2F%2Fcred.be%2Fsites%2Fdefault%2Ffiles%2FCredCrunch50.pdf&usg=AOvVaw0V9SWI-XDJGwGvO9pXSYSn
3. Yokohama Strategy and Plan of Action for a Safer World;Nations,1994
4. Hyogo Framework for Action 2005–2015: Building the Resilience of Nations and Communities to Disasters-Extract from the final report of the World Conference on Disaster Reduction (A/CONF.206/6)https://www.undrr.org/publication/hyogo-framework-action-2005-2015-building-resilience-nations-and-communities-disasters
5. Sendai framework for disaster risk reduction 2015–2030;Proceedings of the UN World Conference on Disaster risk Reduction,2015