Shortened footnote and citation:
{{sfn | Petershagen | 2019 | p=}}
* {{cite book | last=Petershagen | first=Wolf-Henning | title=Ulm und Neu-Ulm: kleine Stadtgeschichte | publisher=Verlag Friedrich Pustet | publication-place=Regensburg | date=2019 | isbn=978-3-7917-3039-4 | language=de}}
Named reference:
<ref name="z250">{{cite book | last=Petershagen | first=Wolf-Henning | title=Ulm und Neu-Ulm: kleine Stadtgeschichte | publisher=Verlag Friedrich Pustet | publication-place=Regensburg | date=2019 | isbn=978-3-7917-3039-4 | language=de | page=}}</ref>