Parsons, T. (2010). The rule of empires: Those who built them, those who endured them, and why they always fall. Oxford University Press.
Chicago-referens (17:e uppl.)Parsons, Timothy. The Rule of Empires: Those Who Built Them, Those Who Endured Them, and Why They Always Fall. Oxford ; New York: Oxford University Press, 2010.
MLA-referens (8:e uppl.)Parsons, Timothy. The Rule of Empires: Those Who Built Them, Those Who Endured Them, and Why They Always Fall. Oxford University Press, 2010.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.