Chapter XV. The Beginning of the Age of Slavery
[b] J. A. Symonds, article “Italy” in the Ninth Edition of the Encyclopædia Britannica.
[c] E. Proctor, op. cit.
[d] J. C. L. S. de Sismondi, op. cit.
[e] W. Robertson, The History of the Reign of Charles V.
[f] Carlo Denina, Delle Rivoluzioni d’Italia.
[h] Callegare, “Preponderanze straniere” in Storia politica d’Italia scritta da una Società di Professori.
[i] Jules Zeller, Histoire de l’Italie.
[j] M. Lafuente, Historia General de España.
[k] J. C. L. S. de Sismondi, Literature of Southern Europe.