CATHERINE KING, The arts of carving and casting, in Siena, Florence and Padua. Art, society and religion 1280-1400, a cura di diana norman, New Haven, Yale University Press 1995, vol. I, Interpretative Essays, p. 97-121, illustrato, colore
CATHERINE KING, Effigies, in Siena, Florence and Padua. Art, society and religion 1280-1400, a cura di diana norman,New Haven, Yale University Press 1995, vol. II, Case Studies, p. 105-127, illustrato, colore
