Sydoruk, John P..
Ideology of Cyrillo-Methodians and its origin /
John P. Sydoruk 
. - Winnipeg  : Ukrainian Free Academy of Sciences,  1954 
. - 64 p.  22 cm. 
 - (Slavistica : proceeding of the Institute of Slavistics of the Ukrainian Free Academy of sciences  ; no. 19 )
<br/><br/> Парал. титул укр..
<br/>К.: Бібліогр. : c. 61-63