Hawking Stephen. (2001). Universe in A Nutshell. Bantam Press.
Chicago-čujuhus (17. p.)Hawking Stephen. Universe in A Nutshell. Sydney Uk: Bantam Press, 2001.
MLA-čujuhus (9. p.)Hawking Stephen. Universe in A Nutshell. Bantam Press, 2001.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.