(U.S.), C. A. f. I. P. (1930). Causes of War, and Security, Old and New; preliminary studies presented to the Catholic Association for International Peace by the Committee on Sources of International Enmity and the Europe Committee. Washington, D.C..
Παραπομπή σε μορφή Chicago (17η εκδ.)(U.S.), Catholic Association for International Peace. Causes of War, and Security, Old and New; Preliminary Studies Presented to the Catholic Association for International Peace by the Committee on Sources of International Enmity and the Europe Committee. Washington, D.C., 1930.
Παραπομπή σε μορφή MLA (8th εκδ.)(U.S.), Catholic Association for International Peace. Causes of War, and Security, Old and New; Preliminary Studies Presented to the Catholic Association for International Peace by the Committee on Sources of International Enmity and the Europe Committee. Washington, D.C., 1930.