1. International Energy Agency (IEA). Key world energy statistics; 2005.
2. Renewable energy—power for a sustainable future;Boyle,1996
3. American Society of Mechanical Engineers. The Pelton water wheel collection. Grass Valley, CA: North Star Power House Museum; 1991. 〈http://files.asme.org/ASMEORG/Communities/History/Landmarks/5617.pdf/〉.
4. Fluid mechanics;White,1994
5. Powerplant technology—international edition;El-Wakil,1984