Cita APA

Hawking, S. W. (2001). The universe in a nutshell.

Citación estilo Chicago

Hawking, Stephen W. The Universe in a Nutshell. Bantam Press, 2001.

Cita MLA

Hawking, Stephen W. The Universe in a Nutshell. 2001.

Warning: These citations may not always be 100% accurate.