Guardini, Romano 1885-1968.
The art of praying: the principles and methods of Christian prayer : formerly entitled Prayer in practice /
Romano Guardini 
. - Manchester : Sophia Institute Press,  1994 
. - v, 184 p.  24 cm. 
<br/><br/> English translation originally published: New York, N.Y. : Pantheon, c1957..
<br/>К.: Бібліогр. творів Романо Гуардіні : с. 183. 
<br/><label>  ISBN: </label>0-918477-21-2