Saya mau tau Nota dari Paus Leo V. Jelaskan dalam bahasa melayu

DeCormenin, Louis Marie; Gihon, James L., A Complete History of the Popes of Rome, from Saint Peter, the First Bishop to Pius the Ninth (1857)

Mann, Horace K., The Lives of the Popes in the Early Middle Ages, Vol. IV: Popes in the Days of Feudal Anarchy, 891-999 (1910)

Norwich, John Julius, The Popes: A History (2011)