Btukfyl

My bibliography should look like this:

Could someone tell me how do I get 3 columns?
This is my code:

    %Dokumentklasse

documentclass[a4paper,11pt, pointlessnumbers,  twoside, numbers=noenddot, captions=nooneline]{scrreprt}



%===Modifizierungen Inhaltsverzeichnis===%

usepackage{tocloft} 



%usepackage{etoolbox}

%patchcmd{l@chapter}{#1}{uppercase{#1}}{}{}% 

%makeatother 





%===Standard Packages===%

%Umlaute, etc.

usepackage[utf8]{inputenc} 

usepackage[ngerman]{babel}

usepackage[T1]{fontenc}

usepackage{graphicx, subfig}

graphicspath{{img/}}

usepackage{lmodern}

usepackage{color}

usepackage[german]{varioref}

usepackage{fancyhdr}

usepackage{tabularx}

usepackage{rotating}

usepackage{lscape}

usepackage{multirow}

usepackage{lipsum}



% zusätzliche Schriftzeichen der American Mathematical Society

usepackage{amsmath,amssymb,amsthm}

usepackage{amsfonts}



% ============= Dokumentbeginn =============



begin{document}



include{01_titel}



include{02_danksagungen}



include{03_aufgabenstellung}





tableofcontents



% pagestyle für gesamtes Dokument aktivieren

%pagestyle{fancy}





include{04_einleitung}



include{05_grundlagen}



include{06_konstruktionsprozess}



include{07_methoden}



include{08_ergebnisse}



include{09_diskussion}



%===Abbildungsverzeichnis===%

listoffigures





%===Tabellenverzeichnis===%

listoftables





%===Literaturverzeichnis===%

bibliographystyle{unsrtdin}

bibliography{Literatur}



end{document}

Here is a solution based on my biblatex-ext-tabular package, which is part of biblatex-ext.

documentclass[ngerman]{article}

usepackage[T1]{fontenc}

usepackage[utf8]{inputenc}

usepackage{babel}

usepackage{csquotes}



usepackage[style=ext-numeric, backend=biber]{biblatex}

usepackage{biblatex-ext-tabular}



DeclareNameAlias{sortname}{family-given}



newbibmacro{tabular:labelnumber}{%

  printtext[labelnumberwidth]{%

    printfield{labelprefix}%

    printfield{labelnumber}}}



usepackage{longtable}

usepackage{array}

newcolumntype{L}[1]{%

  >{raggedrightletnewline\arraybackslashhspace{0pt}}p{#1}}

defbibtabular{bibtabular}

  {setlength{LTpre}{0pt}%

   setlength{LTpost}{0pt}%

   renewcommand*{arraystretch}{2}%

   begin{longtable}{%

   @{}

   L{dimexpr0.05textwidth-tabcolseprelax}

   L{dimexpr0.3textwidth-tabcolseprelax}

   L{dimexpr0.65textwidth-tabcolseprelax}

   @{}}}

  {end{longtable}}

  {anchorlang{usebibmacro{tabular:labelnumber}} &

   anchorlang{usebibmacro{tabular:sortname}} &

   driver{usebibmacro{tabular:omitsortname}} \}



addbibresource{biblatex-examples.bib}



begin{document}

cite{sigfridsson,worman,nussbaum,geer,gaonkar:in}

printbibtabular

end{document}