Putting \singlespace to the bibliography will set each bibitem single spaced. The distance between to item can be changed by the length
bibsep. You can change it just like you did with bibhang
Choose a value you like
Now, for completeness the example with biblatex. Some things are similar, some are slightly different. It has some features that i don't want to miss. And you can alter the appearance
relatively easy.
Code: Select all
\begin{filecontents}{\jobname.bib}
@article{gz1974,
title={The existence of certain planar maps},
author={Gr{\"u}nbaum, Branko and Zaks, Joseph},
journal={Discrete Mathematics},
volume={10},
number={1},
pages={93--115},
year={1974},
publisher={North-Holland}
}
@article{owens1984regular,
title={Regular planar graphs with faces of only two types and shortness parameters},
author={Owens, PJ},
journal={Journal of graph theory},
volume={8},
number={2},
pages={253--275},
year={1984},
publisher={Wiley Online Library}
}
\end{filecontents}
\documentclass{report}
\usepackage[UKenglish]{babel}
\usepackage{blindtext}
\usepackage{setspace}
\doublespacing
\usepackage[style=authoryear,natbib]{biblatex}
\addbibresource{\jobname.bib}
\addbibresource{biblatex-examples.bib}
\setlength{\bibitemsep}{\baselineskip}
\setlength{\bibhang}{1in}
\begin{document}
\chapter{Introduction}
\citet{gz1974} have written a paper on planar maps. On the other
hand, \citeauthor{companion} have written \citetitle{companion}
in \citeyear{companion}.
\blindtext
\chapter{Graphs}
3-, 4-, 5-regular non-hamiltonian graphs can be found in \citep{owens1984regular}.
\singlespacing
\printbibliography[title=References]
\end{document}
Hint, click on »open in writelatex« to check the output and play around.

The smart way: Calm down and take a deep breath, read posts and provided links attentively, try to understand and ask if necessary.