APA (7th ed.) Citation

Marsilius, o. P. (1967). The defender of peace. Harper & Row.

Chicago Style (17th ed.) Citation

Marsilius, of Padua. The Defender of Peace. N.Y.: Harper & Row, 1967.

MLA (8th ed.) Citation

Marsilius, of Padua. The Defender of Peace. Harper & Row, 1967.