Smil, V. (1994). Energy in world history. Westview.
Cita Chicago Style (17a ed.)Smil, Vaclav. Energy in World History. Boulder [etc.]: Westview, 1994.
Cita MLA (9a ed.)Smil, Vaclav. Energy in World History. Westview, 1994.
Precaución: Estas citas no son 100% exactas.
