Treacy, G. C. (1947). A handbook of Catholic political philosophy: Based on the encyclicals of Leo XIII. Paulist Press.
Παραπομπή σε μορφή Chicago (17η εκδ.)Treacy, Gerald C. A Handbook of Catholic Political Philosophy: Based on the Encyclicals of Leo XIII. New York: Paulist Press, 1947.
Παραπομπή σε μορφή MLA (8th εκδ.)Treacy, Gerald C. A Handbook of Catholic Political Philosophy: Based on the Encyclicals of Leo XIII. Paulist Press, 1947.
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