Catholic Association for International Peace (U.S.) Committee on Ethics, Catholic Association for International Peace (U.S.) Joint Policy Committee, McMahon, F. E., & Ryan, J. A. (1940). The obligation of Catholics to promote peace. The Catholic association for international peace.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Catholic Association for International Peace (U.S.) Committee on Ethics, Catholic Association for International Peace (U.S.) Joint Policy Committee, Francis E. McMahon, و John A. Ryan. The Obligation of Catholics to Promote Peace. Washington, D.C.: The Catholic association for international peace, 1940.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Catholic Association for International Peace (U.S.) Committee on Ethics, et al. The Obligation of Catholics to Promote Peace. The Catholic association for international peace, 1940.