mwe.tex

\documentclass{article}

\usepackage[finnish]{babel}
\usepackage{url}
\usepackage{filecontents}

\begin{filecontents}{\jobname.bib}
  @book{Knu86,
    author = {Knuth, Donald E.},
    year = {1986},
    title = {The \TeX book},
    url = {http://www.ctex.org/documents/shredder/src/texbook.pdf},
    urldate = {2017-04-17}
  }
  @misc{jikuja17,
    author = {Kujanp{\"a}{\"a}, Janne},
    title = {unsrt-fi git-repository},
    year = {2017},
    url = {https://github.com/jikuja/bib-fi},
    urldate = {2017-04-17}
  }
\end{filecontents}

\begin{document}

This works, yeah! \cite{Knu86} Homepage\cite{jikuja17}.

\bibliographystyle{unsrt-fi}
\bibliography{\jobname}
\end{document}