Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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