Shortened footnote and citation:
{{sfn | Bulmer | 1988 | p=}}
* {{cite book | last=Bulmer | first=Kenneth | title=Ryder Hook - Vermächtnis der Zukunft | date=1988 | isbn=3-404-23084-1 | language=de}}
Named reference:
<ref name="r218">{{cite book | last=Bulmer | first=Kenneth | title=Ryder Hook - Vermächtnis der Zukunft | date=1988 | isbn=3-404-23084-1 | language=de | page=}}</ref>