Shortened footnote and citation:
{{sfn|Stein|Kumm|1996|p=}}
* {{cite book | last=Stein | first=Walter | last2=Kumm | first2=Werner | title=Navigation leicht gemacht | publisher=Delius Klasing | publication-place=Bielefeld | date=1996 | isbn=3-87412-110-0 | language=de}}
Named reference:
<ref name="c489">{{cite book | last=Stein | first=Walter | last2=Kumm | first2=Werner | title=Navigation leicht gemacht | publisher=Delius Klasing | publication-place=Bielefeld | date=1996 | isbn=3-87412-110-0 | language=de | page=}}</ref>