Shortened footnote and citation:
{{sfn | Luhmann | 1992 | p=}}
* {{cite book | last=Luhmann | first=Niklas | title=Universität als Milieu | publisher=Haux | publication-place=Bielefeld | date=1992 | isbn=3-925471-13-8 | language=de}}
Named reference:
<ref name="y868">{{cite book | last=Luhmann | first=Niklas | title=Universität als Milieu | publisher=Haux | publication-place=Bielefeld | date=1992 | isbn=3-925471-13-8 | language=de | page=}}</ref>