Παραπομπή σε μορφή APA (7η εκδ.)

Catholic Church. Pope (1878-1903 : Leo XIII) & Treacy, G. C. (1941). The chief duties of Christians as citizens. The Paulist Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Catholic Church. Pope (1878-1903 : Leo XIII) και Gerald C. Treacy. The Chief Duties of Christians as Citizens. New York: The Paulist Press, 1941.

Παραπομπή σε μορφή MLA (8th εκδ.)

Catholic Church. Pope (1878-1903 : Leo XIII) και Gerald C. Treacy. The Chief Duties of Christians as Citizens. The Paulist Press, 1941.