Hoffmann, P. (2001). Tomorrow's energy: Hydrogen, fuel cells, and the prospects for a cleaner planet. MIT Press.
Chicago-čujuhus (17. p.)Hoffmann, Peter. Tomorrow's Energy: Hydrogen, Fuel Cells, and the Prospects for a Cleaner Planet. Cambridge, MA: MIT Press, 2001.
MLA-čujuhus (9. p.)Hoffmann, Peter. Tomorrow's Energy: Hydrogen, Fuel Cells, and the Prospects for a Cleaner Planet. MIT Press, 2001.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.