* {{cite book | last=Naṣr | first=Ḥusain | title=Science and civilization in Islam | publisher=The islamic texts society | publication-place=Cambridge, Mass | date=1987 | isbn=0-946621-11-X}}
<ref name="m561">{{cite book | last=Naṣr | first=Ḥusain | title=Science and civilization in Islam | publisher=The islamic texts society | publication-place=Cambridge, Mass | date=1987 | isbn=0-946621-11-X | page=}}</ref>