APA (7th ed.) Citation

Leo XIII, P. C. C. P. (1894). Litterae Encyclicae. Staten Island, N.Y..

Chicago Style (17th ed.) Citation

Leo XIII, Pope; Catholic Church. Pope. Litterae Encyclicae. Staten Island, N.Y., 1894.

MLA (8th ed.) Citation

Leo XIII, Pope; Catholic Church. Pope. Litterae Encyclicae. Staten Island, N.Y., 1894.

Warning: These citations may not always be 100% accurate.