Shortened footnote and citation:
{{sfn | Padberg | Büchter | 2015 | p=}}
* {{cite book | last=Padberg | first=Friedhelm | last2=Büchter | first2=Andreas | title=Einführung Mathematik Primarstufe - Arithmetik | publisher=Springer-Verlag | publication-place=Berlin [u.a.] | date=2015-03-28 | isbn=978-3-662-43449-9 | language=de}}
Named reference:
<ref name="j415">{{cite book | last=Padberg | first=Friedhelm | last2=Büchter | first2=Andreas | title=Einführung Mathematik Primarstufe - Arithmetik | publisher=Springer-Verlag | publication-place=Berlin [u.a.] | date=2015-03-28 | isbn=978-3-662-43449-9 | language=de | page=}}</ref>