Christian unity : the Council of Ferrara-Florence 1438-1439 -1989 / edited by Giuseppe Alberigo
. – Leuven : Leuven University Press ; Uitgeverij Peeters, 1991
. – xii, 685, [6] p. ; 24 cm
. – (Bibliotheca Ephemeridum Theologicarum Lovanensium. 97
. –