Gaya APA
Philosophic classic. (1996).
New Jersey:
Upper Saddle River.
Gaya Chicago
Philosophic classic.
.
New Jersey:
Upper Saddle River,
1996.
Text.
Gaya MLA
Philosophic classic.
.
New Jersey:
Upper Saddle River,
1996.
Text.
Gaya Turabian
Philosophic classic.
New Jersey:
Upper Saddle River,
1996.
Print.