Παραπομπή σε μορφή APA (7η εκδ.)

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.

Παραπομπή σε μορφή Chicago (17η εκδ.)

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.

Παραπομπή σε μορφή MLA (8th εκδ.)

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.