1. Berlin, I. (1971, November 4). The question of Machiavelli. New York Review of Books. http://www.nybooks.com/articles/10391.
2. Black, A. (1992). Political thought in Europe, 1250–1450. Cambridge Medieval Textbooks. Cambridge University Press.
3. Burckhardt, J. (1990). The civilization of the renaissance in Italy (S. G. C. Middlemore, Trans.). Penguin.
4. Burke, K. (1972, April 6). An exchange on Machiavelli. New York Review of Books. http://www.nybooks.com/articles/10240.
5. Burke, P. (1997). The renaissance. Studies in European History. Palgrave Macmillan.