Crone, Patricia 1945-.
Hagarism: the making of the Islamic world /
Patricia Crone, Michael Cook 
. - Cambridge : New York : Cambridge University Press,  1977 
. - ix, 268 p.  22 cm. 
<br/>К.: Бібліогр. : c. 237-258 
<br/><label>  ISBN: </label>0521-21133-6