Shortened footnote and citation:
{{sfn | Sommer | Libbertz | 2015 | p=}}
* {{cite book | last=Sommer | first=Ariane | last2=Libbertz | first2=Roman | title=Lieben lassen | publisher=ars vivendi | publication-place=Cadolzburg | date=2015-10-12 | isbn=978-3-86913-575-5 | language=de}}
Named reference:
<ref name="a064">{{cite book | last=Sommer | first=Ariane | last2=Libbertz | first2=Roman | title=Lieben lassen | publisher=ars vivendi | publication-place=Cadolzburg | date=2015-10-12 | isbn=978-3-86913-575-5 | language=de | page=}}</ref>