Christian unity: the Counil of Ferrara-Florence, 1438/39-1989 /
edited by G. Alberigo 
. - Leuven  : University Press,  1991 
. - XII, 685 p.  25 cm. 
 - (Bibliotheca Ephemeridum Theologicarum Lovaniensium  ; XCVII )
<br/><label>  ISBN: </label>90-6186-437-2