Gardner, E. G. (1907). Saint Catherine of Siena: A study in the religion, literature, and history of the fourteenth century in Italy. J.M. Dent & Co. ; E.P. Dutton & Co..
Chicago-referens (17:e uppl.)Gardner, Edmund Garratt. Saint Catherine of Siena: A Study in the Religion, Literature, and History of the Fourteenth Century in Italy. London : New York: J.M. Dent & Co. ; E.P. Dutton & Co., 1907.
MLA-referens (8:e uppl.)Gardner, Edmund Garratt. Saint Catherine of Siena: A Study in the Religion, Literature, and History of the Fourteenth Century in Italy. J.M. Dent & Co. ; E.P. Dutton & Co., 1907.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.