O'Brien, I. (1978). Francis of Assisi: Mirror of Christ. Franciscan Herald Press.
Chicago Style (17th ed.) CitationO'Brien, Isidore. Francis of Assisi: Mirror of Christ. Chicago: Franciscan Herald Press, 1978.
Cita MLAO'Brien, Isidore. Francis of Assisi: Mirror of Christ. Franciscan Herald Press, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.