books%3Fid=MycQL-9_bqwC&pg=PA46&dq=Izz+al-Din+Usama%7Cfirst1=Tsugitaka%7Clast1=Sato%7Cpublisher=BRILL%7Cyear=1997%7Cisbn=978-90-04-10649-9
books%3Fid=MycQL-9_bqwC&pg=PA46&dq=Izz+al-Din+Usama%7Cfirst1=Tsugitaka%7Clast1=Sato%7Cpublisher=BRILL%7Cyear=1997%7Cisbn=978-90-04-10649-9