* {{cite book | last=Lange | first=Christian | title=Paradise and Hell in Islamic Traditions | publisher=Cambridge University Press | publication-place=New York, NY | date=2016 | isbn=978-0-521-50637-3}}
<ref name="s542">{{cite book | last=Lange | first=Christian | title=Paradise and Hell in Islamic Traditions | publisher=Cambridge University Press | publication-place=New York, NY | date=2016 | isbn=978-0-521-50637-3 | page=}}</ref>