APA (7th ed.) Citation

Greenspan, A. (2007). Age of turbulence: Adventures in a new world (NA.). Penguin Books.

Chicago Style (17th ed.) Citation

Greenspan, Alan. Age of Turbulence: Adventures in a New World. NA. New York: Penguin Books, 2007.

MLA (9th ed.) Citation

Greenspan, Alan. Age of Turbulence: Adventures in a New World. NA. Penguin Books, 2007.