Oryshkewych, Ostap E..
The General principles of education and The principles of modern curriculum in the classroom /
Ostap E. Oryshkewych ; foreword by Ronald M. Patterson 
. - Washington : St. Josaphat's Pedagogical Institute and Seminary,  1977 
. - xx, 413 p.  23 cm. 
<br/>К.: Бібліогр. : с. 387-408 
<br/><label>  ISBN: </label>0-9601414-1-3 (v. 2, 3)