Hawking, S. W. (2001). universe in a nutshell. Bantam Press.
Chicago Edition CitationHawking, Stephen W. Universe in a Nutshell. London: Bantam Press, 2001.
Cita MLAHawking, Stephen W. Universe in a Nutshell. Bantam Press, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.