Book 2 — Chapter III. The High Noon of the Papacy
Reading edition
b O. J. Reichel, op. cit.
c H. Stebbing, op. cit.
d J. B. Mullinger, op. cit.
e H. H. Milman, op. cit.
f V. Duruy, op. cit.
g James Bryce, The Holy Roman Empire.
h Roger of Hoveden, Historia post Bedam.
K. F. Eichhorn, Deutsche Staats und Rechtsgeschichte.
j Ciacconius (Chacon), Vitæ Pontificanum.
k J. C. L. Gieseler, Compendium of Ecclesiastical History (translated by J. W. Hull).
l Henry Hallam, The State of Europe during the Middle Ages.
Innocent III, Epistolarum liber I et ref.
n J. L. von Mosheim, Institutes of Ecclesiastical History (translated from the Latin by James Murdock).
o Anselmo di Lucca, Defensio pro Gregorio VII.