output.tex

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[english,czech]{babel}
\usepackage{csquotes}
\usepackage[style=iso-authoryear]{biblatex}

\addbibresource{mybib.bib}

\defbibenvironment{bibliography}
  {\list
     {}
     {\setlength{\labelwidth}{0pt}%
      \setlength{\leftmargin}{20pt}%
      \setlength{\itemindent}{-10pt}%
      %\setlength{\itemsep}{\bibitemsep}%
      %\setlength{\parsep}{\bibparsep}}%
      }%
      \renewcommand*{\makelabel}[1]{\hss##1}}
  {\endlist}
  {\item}

%% Since the `thebibliography` environment does not support
%% citing by the method author-year, only references are tested
%% for correctness
\begin{document}

\nocite{*}
\printbibliography

\end{document}