Gregory the Great and his world - Markus, Robert A. (OLS)http://ftis/name/56963 (Cambridge University Press,, 1997)

L'arte come cura - Bergonzoni, Alessandro. (OLS)http://ftis/name/93032; Sassatelli, Giuseppe. (OLS)http://ftis/name/93033 (ASMEPA,, 2012)
In copertina: La cura