Friedrichs, J. (2013). The future is not what it used to be: Climate change and energy scarcity. MIT Press.
Chicago-čujuhus (17. p.)Friedrichs, Jörg. The Future Is Not What It Used to Be: Climate Change and Energy Scarcity. Cambridge, Mass.: MIT Press, 2013.
MLA-čujuhus (9. p.)Friedrichs, Jörg. The Future Is Not What It Used to Be: Climate Change and Energy Scarcity. MIT Press, 2013.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.