Shortened footnote and citation:
{{sfn | Stielke | 2021 | p=}}

* {{cite book | last=Stielke | first=Sebastian | title=100 Facts about Babelsberg | publisher=be.bra Verlag | publication-place=Berlin | date=2021-02-25 | isbn=3-86124-746-1 | language=de}}


Named reference:
<ref name="r325">{{cite book | last=Stielke | first=Sebastian | title=100 Facts about Babelsberg | publisher=be.bra Verlag | publication-place=Berlin | date=2021-02-25 | isbn=3-86124-746-1 | language=de | page=}}</ref>