Shortened footnote and citation:
{{sfn | Feynman | 1999 | p=}}

* {{cite book | last=Feynman | first=Richard Phillips | title=Vorlesungen über Physik | publisher=Oldenbourg | publication-place=München | date=1999 | isbn=3-486-25134-1 | language=de}}


Named reference:
<ref name="i856">{{cite book | last=Feynman | first=Richard Phillips | title=Vorlesungen über Physik | publisher=Oldenbourg | publication-place=München | date=1999 | isbn=3-486-25134-1 | language=de | page=}}</ref>