Wilkinson, A. (2007). Looking to our energy futures.
Chicago-čujuhus (17. p.)Wilkinson, A. Looking to Our Energy Futures. 2007.
MLA-čujuhus (9. p.)Wilkinson, A. Looking to Our Energy Futures. 2007.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.