Greenspan, A. (2007). The Age of Turbulence. Princeton University Press.
Chicago Style aipamenaGreenspan, Alan. The Age of Turbulence. New Jersey: Princeton University Press, 2007.
MLA aipamenaGreenspan, Alan. The Age of Turbulence. Princeton University Press, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.