Shortened footnote and citation:
{{sfn|Riccius|2023|p=}}
* {{cite book | last=Riccius | first=Walter | title=Die Institution der Marineattachés | publisher=Verlag Dr. Köster | publication-place=Berlin | date=2023 | isbn=978-3-96831-040-4 | language=de}}
Named reference:
<ref name="o812">{{cite book | last=Riccius | first=Walter | title=Die Institution der Marineattachés | publisher=Verlag Dr. Köster | publication-place=Berlin | date=2023 | isbn=978-3-96831-040-4 | language=de | page=}}</ref>