Droege, P. (2009). 100% renewable: Energy autonomy in action. Earthscan.
Chicago Style (17th ed.) CitationDroege, Peter. 100% Renewable: Energy Autonomy in Action. London: Earthscan, 2009.
MLA (9th ed.) CitationDroege, Peter. 100% Renewable: Energy Autonomy in Action. Earthscan, 2009.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.