Shortened footnote and citation:
{{sfn | Frenzke | 1980 | p=}}
* {{cite book | last=Frenzke | first=Dietrich | title=Die Rechtsnatur des Sowjetblocks | publisher=Berlin Verlag | publication-place=Berlin | date=1980 | isbn=3-87061-162-6 | language=de}}
Named reference:
<ref name="e556">{{cite book | last=Frenzke | first=Dietrich | title=Die Rechtsnatur des Sowjetblocks | publisher=Berlin Verlag | publication-place=Berlin | date=1980 | isbn=3-87061-162-6 | language=de | page=}}</ref>