Fuhrmann, Horst..
Germany in the high Middle Ages, c. 1050-1200 /
translated by Timothy Reuter 
. - Cambridge ; New York  : Cambridge University Press,  2001 
. - vii, 209 p.  22 cm. 
 - ((Cambridge medieval textbooks) )
<br/>К.: Бібліогр. : с. 187-195. 
<br/><label>  ISBN: </label>0-521-26638-6 ; 0-521-31980-3