f Giovanni Batista Testa, History of the War of Frederic I against the Communes of Lombardy.
[g] Andrea Dandolo, Chronicon Venetum.
[h] Giovanni Diacono, Chronicon.
[i] Heinrich Leo, Entwicklung der Verfassung der Lombardischen Städte.
[k] W. C. Hazlitt, History of the Venetian Republic.
[l] Pasquale Villani, the article “Pisa” in the Ninth Edition of the Encyclopædia Britannica.
[m] Karl Hillebrand, Dino Campagni: Étude Historique et Littéraire sur l’Époque de Dante.
[n] Malaspina Ricordano, Istoria fiorentina, in Muratori’s “Rerum Italicarum Scriptores,” vol. VIII.
[o] E. Proctor, The History of Italy.