Pius, P. C. C. P. (1929). How the "Roman Question" was Settled. London.
Chicago Style (17th ed.) CitationPius, Pope; Catholic Church. Pope. How the "Roman Question" Was Settled. London, 1929.
MLA (8th ed.) CitationPius, Pope; Catholic Church. Pope. How the "Roman Question" Was Settled. London, 1929.
Warning: These citations may not always be 100% accurate.