* {{cite book | last=Pressl | first=Diana Alexandra | title=Beamte und Soldaten | publisher=Peter Lang Publishing | publication-place=Frankfurt am Main ; New York | date=1998 | isbn=3-631-32586-X | language=de}}
<ref name="d136">{{cite book | last=Pressl | first=Diana Alexandra | title=Beamte und Soldaten | publisher=Peter Lang Publishing | publication-place=Frankfurt am Main ; New York | date=1998 | isbn=3-631-32586-X | language=de | page=}}</ref>