Catholic Church. Pope (1878-1903 : Leo XIII) & Treacy, G. C. (1941). The chief duties of Christians as citizens. The Paulist Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCatholic Church. Pope (1878-1903 : Leo XIII) और Gerald C. Treacy. The Chief Duties of Christians as Citizens. New York: The Paulist Press, 1941.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCatholic Church. Pope (1878-1903 : Leo XIII) और Gerald C. Treacy. The Chief Duties of Christians as Citizens. The Paulist Press, 1941.
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