Leo XIII, P. C. C. P. (1903). Poems, Charades, Inscriptions of Pope Leo XIII including the Revised Compositions of His Early Life in Chronological Order. Philadelphia.
Chicago-referens (17:e uppl.)Leo XIII, Pope; Catholic Church. Pope. Poems, Charades, Inscriptions of Pope Leo XIII Including the Revised Compositions of His Early Life in Chronological Order. Philadelphia, 1903.
MLA-referens (8:e uppl.)Leo XIII, Pope; Catholic Church. Pope. Poems, Charades, Inscriptions of Pope Leo XIII Including the Revised Compositions of His Early Life in Chronological Order. Philadelphia, 1903.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.