Passelecq, Georges, Suchecky, Bernard..
The hidden encyclical of Pius XI /
translated from the French by S. Rendall ; with an introduction by G. Wills 
. - New York ; San Diego ; London  : Harcourt Brace & Company,  1997 
. - XXVI, 319 p.  24 cm. 
<br/>К.: Бібліогр. : с. 301-305. 
<br/><label>  ISBN: </label>0-15-100244-4