Shortened footnote and citation:
{{sfn|Busch|Röll|2003|p=}} * {{cite book | last=Busch | first=Rainer | last2=Röll | first2=Hans-Joachim | title=Der U-Boot-Krieg 1939 - 1945 | publisher=Mittler & Sohn | publication-place=Hamburg | date=2003 | isbn=3-8132-0515-0 | language=de}}


Named reference:
<ref name="b058">{{cite book | last=Busch | first=Rainer | last2=Röll | first2=Hans-Joachim | title=Der U-Boot-Krieg 1939 - 1945 | publisher=Mittler & Sohn | publication-place=Hamburg | date=2003 | isbn=3-8132-0515-0 | language=de | page=}}</ref>