Greenspan, A. (2007). The age of turbulence: Adventures in a new world. Penguin Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGreenspan, Alan. The Age of Turbulence: Adventures in a New World. New York: Penguin Press, 2007.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGreenspan, Alan. The Age of Turbulence: Adventures in a New World. Penguin Press, 2007.