Coppa, F. J. (2014). Papacy in the modern world: A political history. Reaktion Books.
芝加哥风格引文Coppa, Frank J. Papacy in the Modern World: A Political History. London, United Kingdom: Reaktion Books, 2014.
MLA引文Coppa, Frank J. Papacy in the Modern World: A Political History. Reaktion Books, 2014.
警告：这些引文格式不一定是100％准确.