Leo XIII, P. C. C. P. (1941). Sapientiae Christianae, The Chief Duties of Christians As Citizens Encyclical Letter of Pope Leo XIII. New York.
Chicago Style (17th ed.) CitationLeo XIII, Pope; Catholic Church. Pope. Sapientiae Christianae, The Chief Duties of Christians As Citizens Encyclical Letter of Pope Leo XIII. New York, 1941.
MLA (8th ed.) CitationLeo XIII, Pope; Catholic Church. Pope. Sapientiae Christianae, The Chief Duties of Christians As Citizens Encyclical Letter of Pope Leo XIII. New York, 1941.
Warning: These citations may not always be 100% accurate.