Shortened footnote and citation:
{{sfn|Lunze|2010|p=}}
* {{cite book | last=Lunze | first=Jan | title=Regelungstechnik 2 | publisher=Springer | publication-place=Berlin, Heidelberg | date=2010-04-22 | isbn=978-3-642-10197-7 | language=de}}
Named reference:
<ref name="u668">{{cite book | last=Lunze | first=Jan | title=Regelungstechnik 2 | publisher=Springer | publication-place=Berlin, Heidelberg | date=2010-04-22 | isbn=978-3-642-10197-7 | language=de | page=}}</ref>