Gaya APA
Hawking, Stephen. (1998).
A brief history of time .
London:
Bantam Press.
Gaya Chicago
Hawking, Stephen.
A brief history of time.
London:
Bantam Press,
1998.
Text.
Gaya MLA
Hawking, Stephen.
A brief history of time.
London:
Bantam Press,
1998.
Text.
Gaya Turabian
Hawking, Stephen.
A brief history of time.
London:
Bantam Press,
1998.
Print.