Gaya APA
Greenspan, Alan. (2007).
The Age of Turbulence .
United States of America:
The Penguin Press.
Gaya Chicago
Greenspan, Alan.
The Age of Turbulence.
United States of America:
The Penguin Press,
2007.
Text.
Gaya MLA
Greenspan, Alan.
The Age of Turbulence.
United States of America:
The Penguin Press,
2007.
Text.
Gaya Turabian
Greenspan, Alan.
The Age of Turbulence.
United States of America:
The Penguin Press,
2007.
Print.