APA Style
PIEPER, Josef. (1966).
The four cardinal virtues .
Notre Dame:
.
Chicago Style
PIEPER, Josef.
The four cardinal virtues.
Notre Dame:
,
1966.
Text.
MLA Style
PIEPER, Josef.
The four cardinal virtues.
Notre Dame:
,
1966.
Text.
Turabian Style
PIEPER, Josef.
The four cardinal virtues.
Notre Dame:
,
1966.
Print.