Gaya APA
Wheatley, Dennis. (1971).
They Used Dark Forces .
London:
Arrow Books.
Gaya Chicago
Wheatley, Dennis.
They Used Dark Forces.
London:
Arrow Books,
1971.
Text.
Gaya MLA
Wheatley, Dennis.
They Used Dark Forces.
London:
Arrow Books,
1971.
Text.
Gaya Turabian
Wheatley, Dennis.
They Used Dark Forces.
London:
Arrow Books,
1971.
Print.