Cita APA (7a ed.)

Olivi, P. J., & Karris, R. J. (2012). Spiritual Warfare and Six Other Spiritual Writings by Peter of John Olivi. Franciscan Institute Publications.

Cita Chicago Style (17a ed.)

Olivi, Pierre Jean, y Robert J. Karris. Spiritual Warfare and Six Other Spiritual Writings by Peter of John Olivi. St. Bonaventure, New York: Franciscan Institute Publications, 2012.

Cita MLA (8a ed.)

Olivi, Pierre Jean, y Robert J. Karris. Spiritual Warfare and Six Other Spiritual Writings by Peter of John Olivi. Franciscan Institute Publications, 2012.