Gaya APA
Great Thinkers of the western world. (1992).
USA:
HarperCollinsPublisher.
Gaya Chicago
Great Thinkers of the western world.
.
USA:
HarperCollinsPublisher,
1992.
Text.
Gaya MLA
Great Thinkers of the western world.
.
USA:
HarperCollinsPublisher,
1992.
Text.
Gaya Turabian
Great Thinkers of the western world.
USA:
HarperCollinsPublisher,
1992.
Print.