1. World Risk Report 2019 Focus: Water Supplyhttps://reliefweb.int/sites/reliefweb.int/files/resources/WorldRiskReport-2019_Online_english.pdf
2. World Risk Report: Environmental Degradation and Disasterhttps://www.droughtmanagement.info/literature/UNU_world_risk_report_2012_2012.pdf
3. Malaysia Disaster Management Reference Handbook. Center for Excellence in Disaster & Humanitarian Assistancehttp://reliefweb.int/map/chile/chilelocation-map-2013.
4. The Changing Face of Strategic Crisis Management. OECD Reviews of Risk Management Policieshttps://www.oecd-ilibrary.org/governance/the-changing-face-of-strategic-crisis-management_9789264249127-en
5. Environmental Hazards: Assessing Risk and Reducing Disaster;Smith,2013