Shortened footnote and citation:
{{sfn|Theissing|Rettinger|Theissing|1996|p=}}
* {{cite book | last=Theissing | first=Jürgen | last2=Rettinger | first2=Gerhard | last3=Theissing | first3=Gerhard | title=HNO-Operationslehre | publisher=Thieme | publication-place=Stuttgart New York | date=1996-01 | isbn=3-13-463703-0 | language=de}}
Named reference:
<ref name="z702">{{cite book | last=Theissing | first=Jürgen | last2=Rettinger | first2=Gerhard | last3=Theissing | first3=Gerhard | title=HNO-Operationslehre | publisher=Thieme | publication-place=Stuttgart New York | date=1996-01 | isbn=3-13-463703-0 | language=de | page=}}</ref>