Codices Pseudo-Isidoriani : a palaeographico-historical study / by Schafer Williams ; with a foreword by Horst Fuhrmann. - Williams, Schafer. (OLS)http://pul/name/13764; Fuhrmann, Horst, 1926- (OLS)http://pul/name/1488 (Fordham University Press, 1971)
"Works cited in abbrevation": p. [xvi]-xviii.