APA

Bull G., . (1999). Niccolo Machiavelli the Prince. New York: Penguin Books.

Chicago

Bull George, . 1999. Niccolo Machiavelli the Prince. New York: Penguin Books.

Harvard

Bull G., . (1999). Niccolo Machiavelli the Prince. New York: Penguin Books.

MLA

Bull George, . Niccolo Machiavelli the Prince. New York: Penguin Books. 1999.