431131 Muller-Kraenner, S. (2008). Energy security. London : Earthscan Publications Ltd..
Cita Chicago (17th ed.)431131 Muller-Kraenner, Sascha. Energy Security. London : Earthscan Publications Ltd., 2008.
Cita MLA (9th ed.)431131 Muller-Kraenner, Sascha. Energy Security. London : Earthscan Publications Ltd., 2008.
Atenció: Aquestes cites poden no estar 100% correctes.