Gaya APA
sheldon,sidney. (1991).
The Doomsday Conspiracy .
:
HarperCollinsPublishers.
Gaya Chicago
sheldon,sidney.
The Doomsday Conspiracy.
:
HarperCollinsPublishers,
1991.
Text.
Gaya MLA
sheldon,sidney.
The Doomsday Conspiracy.
:
HarperCollinsPublishers,
1991.
Text.
Gaya Turabian
sheldon,sidney.
The Doomsday Conspiracy.
:
HarperCollinsPublishers,
1991.
Print.