LaTeX Forum

\documentclass{article}
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\usepackage[ngerman]{babel}
\usepackage[numbers]{natbib}
\usepackage{bibgerm}

\title{Minimalbeispiel}
\author{ }
\date{ }

\begin{document}

\maketitle

\cite{burda,hagen}

\bibliographystyle{natdin}
\bibliography{quellen}

\end{document}

@BOOK {burda,
    author    = "Burda, Hynek AND Hilken, Gero AND Zrzavý, Jan",
    title     = "Systematische Zoologie",
    publisher = "Verlag Eugen Ulmer",
    year      = "2008",
    address   = "Stuttgart"
}
@BOOK {hagen,
    author    = "von Hagen, Eberhard",
    title     = "Hummeln -- bestimmen, ansiedeln, vermehren, schützen",
    publisher = "Neumann-Neudamm",
    year      = "1988",
    address   = "Melsungen",
    edition   = "2., verbesserte Auflage"
}

\begin{filecontents}{quellen.bib}
@BOOK{burda, 
     author    = "Burda, Hynek AND Hilken, Gero AND Zrzavý, Jan", 
     title     = "Systematische Zoologie", 
     publisher = "Verlag Eugen Ulmer", 
     year      = "2008", 
     address   = "Stuttgart" 
} 
 @BOOK{hagen, 
     author    = "von Hagen, Eberhard", 
     title     = "Hummeln -- bestimmen, ansiedeln, vermehren, schützen", 
     publisher = "Neumann-Neudamm", 
     year      = "1988", 
     address   = "Melsungen", 
     edition   = "2., verbesserte Auflage" 
}
\end{filecontents}
\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[ngerman]{babel}
\usepackage{biblatex}
\usepackage{csquotes}
\addbibresource{quellen.bib}
%\usepackage[numbers]{natbib}
%\usepackage{bibgerm}

\title{Minimalbeispiel}
\author{ }
\date{ }

\begin{document}
\maketitle

\cite{burda,hagen}
%\bibliographystyle{natdin}
\printbibliography
\end{document}