APA (7th ed.) Citation

Ryan, A. (2013). On politics: [a history of political thought from Herodotus to the present]. Penguin Books.

Chicago Style (17th ed.) Citation

Ryan, Alan. On Politics: [a History of Political Thought from Herodotus to the Present]. London: Penguin Books, 2013.

MLA (9th ed.) Citation

Ryan, Alan. On Politics: [a History of Political Thought from Herodotus to the Present]. Penguin Books, 2013.