Proceedings of the International Congress Commemorating the Millennium of Christianity in Rus’-Ukraine /
general editors : Omeljan Pritsak, Ihor Ševčenko ; with the assistance of Miroslav Labunka 
. - Cambridge : Ukrainian Research Institute, Harvard University,  1990 
. - IX, 894 p.  24 cm. 
 - Harvard Ukrainian studies  v. 12/13 (1988/1989) .
<br/><br/> Special issue.
<br/>К.: Бібліогр. в кінці статей ; Index