* {{cite book | last=Frum | first=David | last2=Perle | first2=Richard Norman | title=An End to Evil | publisher=Random House Digital, Inc. | publication-place=Westminster | date=2003 | isbn=978-1-4000-6194-5}}
<ref name="e308">{{cite book | last=Frum | first=David | last2=Perle | first2=Richard Norman | title=An End to Evil | publisher=Random House Digital, Inc. | publication-place=Westminster | date=2003 | isbn=978-1-4000-6194-5 | page=}}</ref>