Shortened footnote and citation:
{{sfn | Ostrogorski | 1963 | p=}}
* {{cite book | last=Ostrogorski | first=Georgije | title=Geschichte des byzantinischen Staates | publisher=C.H.Beck | date=1963 | isbn=3-406-01414-3 | language=de}}
Named reference:
<ref name="f091">{{cite book | last=Ostrogorski | first=Georgije | title=Geschichte des byzantinischen Staates | publisher=C.H.Beck | date=1963 | isbn=3-406-01414-3 | language=de | page=}}</ref>