Shortened footnote and citation:
{{sfn | Longerich | 2008 | p=}}
* {{cite book | last=Longerich | first=Peter | title=Heinrich Himmler | publisher=Siedler | publication-place=München | date=2008 | isbn=978-3-88680-859-5 | language=de}}
Named reference:
<ref name="a154">{{cite book | last=Longerich | first=Peter | title=Heinrich Himmler | publisher=Siedler | publication-place=München | date=2008 | isbn=978-3-88680-859-5 | language=de | page=}}</ref>