Gaya APA
Lewis, C.S.. (1962).
The screwtape letters .
London:
Collins.
Gaya Chicago
Lewis, C.S..
The screwtape letters.
London:
Collins,
1962.
Text.
Gaya MLA
Lewis, C.S..
The screwtape letters.
London:
Collins,
1962.
Text.
Gaya Turabian
Lewis, C.S..
The screwtape letters.
London:
Collins,
1962.
Print.