Catholic Church. Pontificium Consilium ad Christianorum Unitatem Fovendam.
Directory for the application of principles and norms on ecumenism /
Pontificium Consilium ad Christianorum Unitatem Fovendam 
. - Vatican City : Pontificium Consilium ad Christianorum Unitatem Fovendam,  1993 
. - 100 p.  23 cm. 
 - Publication / Office for Publishing and Promotion Services, United States Catholic Conference  no. 658-1 .
<br/><label>  ISBN: </label>1-55586-658-1