Shortened footnote and citation:
{{sfn | Hummel | Ossenkop | 1998 | p=}}

* {{cite book | last=Hummel | first=Martin | last2=Ossenkop | first2=Christina | title=Lusitanica et Romanica | publisher=Buske Verlag | publication-place=Hamburg | date=1998 | isbn=3-87548-172-0 | language=de}}


Named reference:
<ref name="m564">{{cite book | last=Hummel | first=Martin | last2=Ossenkop | first2=Christina | title=Lusitanica et Romanica | publisher=Buske Verlag | publication-place=Hamburg | date=1998 | isbn=3-87548-172-0 | language=de | page=}}</ref>