Catholic Church. Pope & Schaefer, M. C. (1936). A papal peace mosaic, 1878-1936: Excerpts from the messages of Popes Leo XIII, Pius X, Benedict XV and Pius XI. The Paulist Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCatholic Church. Pope और Mary Catherine Schaefer. A Papal Peace Mosaic, 1878-1936: Excerpts from the Messages of Popes Leo XIII, Pius X, Benedict XV and Pius XI. New York: The Paulist Press, 1936.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCatholic Church. Pope और Mary Catherine Schaefer. A Papal Peace Mosaic, 1878-1936: Excerpts from the Messages of Popes Leo XIII, Pius X, Benedict XV and Pius XI. The Paulist Press, 1936.
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