Ryan, A. (2013). On politics: [a history of political thought from Herodotus to the present]. Penguin Books.
Chicago-Zitierstil (17. Ausg.)Ryan, Alan. On Politics: [a History of Political Thought from Herodotus to the Present]. London: Penguin Books, 2013.
MLA-Zitierstil (9. Ausg.)Ryan, Alan. On Politics: [a History of Political Thought from Herodotus to the Present]. Penguin Books, 2013.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.