Benedict XVI pope 1927-.
A school of prayer: the saints show us how to pray : general audiences : 4 May 2011 - 22 June 2011, 3 August 2011 - 27 June 2012, 1 August 2012 - 3 October 2012 /
pope Benedict XVI 
. - San Francisco : Ignatius Press,  2012 
. - 282 p.  21 cm. 
<br/><br/> English translation by "L’Osservatore romano".
<br/><label>  ISBN: </label>978-1-58617-694-5