APA Style
Arnold, Guy. (1987).
Batubara .
London:
Pradnya Paramita.
Chicago Style
Arnold, Guy.
Batubara.
London:
Pradnya Paramita,
1987.
Text.
MLA Style
Arnold, Guy.
Batubara.
London:
Pradnya Paramita,
1987.
Text.
Turabian Style
Arnold, Guy.
Batubara.
London:
Pradnya Paramita,
1987.
Print.