Shortened footnote and citation:
{{sfn | Kunkel-Razum | 2009 | p=}}

* {{cite book | last=Kunkel-Razum | first=Kathrin | title=“Der” Duden in 12 Bänden | publisher=Dudenverl | publication-place=Mannheim | date=2009 | isbn=978-3-411-04048-3 | language=de}}


Named reference:
<ref name="h250">{{cite book | last=Kunkel-Razum | first=Kathrin | title=“Der” Duden in 12 Bänden | publisher=Dudenverl | publication-place=Mannheim | date=2009 | isbn=978-3-411-04048-3 | language=de | page=}}</ref>