Droege, P. (2009). 100% renewable: Energy autonomy in action. Earthscan.
Cita Chicago (17th ed.)Droege, Peter. 100% Renewable: Energy Autonomy in Action. London: Earthscan, 2009.
Cita MLA (9th ed.)Droege, Peter. 100% Renewable: Energy Autonomy in Action. Earthscan, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.