Shortened footnote and citation:
{{sfn | Sommer | 1996 | p=}}
* {{cite book | last=Sommer | first=Ulf | title=Die Liberal-Demokratische Partei Deutschlands | publisher=Agenda-Verl | publication-place=Münster | date=1996 | isbn=3-929440-88-1 | language=de}}
Named reference:
<ref name="d207">{{cite book | last=Sommer | first=Ulf | title=Die Liberal-Demokratische Partei Deutschlands | publisher=Agenda-Verl | publication-place=Münster | date=1996 | isbn=3-929440-88-1 | language=de | page=}}</ref>