Duffy, M. J., Gasnick, R. M., & Francis, o. A. (1980). Francis, brother of the universe: His complete life's story. Marvel Comics Group : Franciscan Communications Office.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Duffy, Mary Jo, Roy M. Gasnick, و of Assisi Francis. Francis, Brother of the Universe: His Complete Life's Story. New York: Marvel Comics Group : Franciscan Communications Office, 1980.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Duffy, Mary Jo, et al. Francis, Brother of the Universe: His Complete Life's Story. Marvel Comics Group : Franciscan Communications Office, 1980.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.