* {{cite book | last=Hauck | first=Gerhard | title=Gesellschaft und Staat in Afrika | publisher=Brandes & Apsel | publication-place=Frankfurt am Main | date=2001 | isbn=3-86099-226-0 | language=de}}
<ref name="e186">{{cite book | last=Hauck | first=Gerhard | title=Gesellschaft und Staat in Afrika | publisher=Brandes & Apsel | publication-place=Frankfurt am Main | date=2001 | isbn=3-86099-226-0 | language=de | page=}}</ref>