{{sfn|Brown|2003|p=}}
* {{cite book | last=Brown | first=Daniel W. | title=A New Introduction to Islam | publisher=Wiley-Blackwell | publication-place=Malden | date=2003-10-17 | isbn=978-0-631-21604-9}}
<ref name="n325">{{cite book | last=Brown | first=Daniel W. | title=A New Introduction to Islam | publisher=Wiley-Blackwell | publication-place=Malden | date=2003-10-17 | isbn=978-0-631-21604-9 | page=}}</ref>