Shortened footnote and citation:
{{sfn | Wahl | 2000 | p=}}
* {{cite book | last=Wahl | first=Günter | title=Tesla-Energie | publisher=Franzis | publication-place=Poing | date=2000-01 | isbn=3-7723-5496-3 | language=de}}
Named reference:
<ref name="y868">{{cite book | last=Wahl | first=Günter | title=Tesla-Energie | publisher=Franzis | publication-place=Poing | date=2000-01 | isbn=3-7723-5496-3 | language=de | page=}}</ref>