Leo XIII, P. (1954). The Church Speaks to the Modern World. Image Books.
Chicago Style (17th ed.) CitationLeo XIII, Pope. The Church Speaks to the Modern World. Image Books, 1954.
MLA (8th ed.) CitationLeo XIII, Pope. The Church Speaks to the Modern World. Image Books, 1954.
Warning: These citations may not always be 100% accurate.