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.
Lua i Stíl Chicago (17ú heag.)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.
Lua MLA (8ú heag.)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.
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