Treacy, G. C. (1947). A handbook of Catholic political philosophy: Based on the encyclicals of Leo XIII. Paulist Press.
Chicago-referens (17:e uppl.)Treacy, Gerald C. A Handbook of Catholic Political Philosophy: Based on the Encyclicals of Leo XIII. New York: Paulist Press, 1947.
MLA-referens (8:e uppl.)Treacy, Gerald C. A Handbook of Catholic Political Philosophy: Based on the Encyclicals of Leo XIII. Paulist Press, 1947.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.