Leo XIII, P. (1951). Scholastic philosophy: Encyclical letter of Pope Leo XIII : Aeterni Patris / with discussion club outline by Rev. Gerald C. Treacy, S. J. New York.
Chicago-referens (17:e uppl.)Leo XIII, Pope. Scholastic Philosophy: Encyclical Letter of Pope Leo XIII : Aeterni Patris / with Discussion Club Outline by Rev. Gerald C. Treacy, S. J. New York, 1951.
MLA-referens (8:e uppl.)Leo XIII, Pope. Scholastic Philosophy: Encyclical Letter of Pope Leo XIII : Aeterni Patris / with Discussion Club Outline by Rev. Gerald C. Treacy, S. J. New York, 1951.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.