Shortened footnote and citation:
{{sfn|Kopetzky|2021|p=}} * {{cite book | last=Kopetzky | first=Steffen | title=Monschau | publisher=Rowohlt Berlin | publication-place=Berlin | date=2021-03-23 | isbn=978-3-7371-0112-7 | language=de}}


Named reference:
<ref name="x411">{{cite book | last=Kopetzky | first=Steffen | title=Monschau | publisher=Rowohlt Berlin | publication-place=Berlin | date=2021-03-23 | isbn=978-3-7371-0112-7 | language=de | page=}}</ref>