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-viite (17. p.)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-viite (8. p.)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.
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