1. Renewable Energy Sources and Climate Change Mitigation Special Report of the Intergovernmental Panel on Climate Change;IPPC,2012
2. Hydropower Development Book Series Consisting of 17 Volumes Published between 1993 and 2005;NTNU,1993
3. Database Renewable Electricity Capacity and Generation Statistics;IRENA,2017
4. Enerdata. Available from: https://yearbook.enerdata.net/electricity/world-electricity-production-statistics.html.
5. Wikipedia. Available from: http://en.wikipedia.org/wiki/List_of_largest_hydroelectric_power_stations.