APA Style
MacInnes, Helen. (1973).
Horizon .
London:
FONTANA/ Collins.
Chicago Style
MacInnes, Helen.
Horizon.
London:
FONTANA/ Collins,
1973.
Text.
MLA Style
MacInnes, Helen.
Horizon.
London:
FONTANA/ Collins,
1973.
Text.
Turabian Style
MacInnes, Helen.
Horizon.
London:
FONTANA/ Collins,
1973.
Print.