https://tex.stackexchange.com/q/551447/35864

kktex.tex

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@Misc{BZ2020,
  author       = {{Bundeszentrale für politische Bildung}},
  title        = {Fusion},
  organization = {Bundeszentrale für politische Bildung},
  url          = {https://www.bpb.de/nachschlagen/lexika/lexikon-der-wirtschaft/19363/fusion},
  urldate      = {2020-06-04},
}
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\begin{document}
\cite{sigfridsson,BZ2020}
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