Shortened footnote and citation:
{{sfn|Isayama|2020|p=}}
* {{cite book | last=Isayama | first=Hajime | title=Attack on Titan. 30 | publisher=Carlsen Verlag Gmbh | publication-place=Hamburg | date=2020 | isbn=978-3-551-79950-0 | language=fi}}
Named reference:
<ref name="d135">{{cite book | last=Isayama | first=Hajime | title=Attack on Titan. 30 | publisher=Carlsen Verlag Gmbh | publication-place=Hamburg | date=2020 | isbn=978-3-551-79950-0 | language=fi | page=}}</ref>