APA Style
WOLFF, Robert Paul. (1998).
About philosophy, 7E .
London:
Prentice Hall.
Chicago Style
WOLFF, Robert Paul.
About philosophy, 7E.
London:
Prentice Hall,
1998.
Text.
MLA Style
WOLFF, Robert Paul.
About philosophy, 7E.
London:
Prentice Hall,
1998.
Text.
Turabian Style
WOLFF, Robert Paul.
About philosophy, 7E.
London:
Prentice Hall,
1998.
Print.