# How to add the citation keys to the bibliography?

How can I add the citation key to the bibliography?

Let's take this entry as an example:

@book{Fowler1999,
author = {Fowler, Martin},
description = {AOEvolutionchapter short paper},
isbn = {0-201-48567-2},
title = {Refactoring: Improving the Design of Existing Code},
year = 1999
}


I would now want the bibliography in my PDF document to look like this:

[Fowler1999] Martin Fowler. Refactoring: Improving the Design of Existing Code. Addison-Wesley, Boston, MA, USA, 1999. ISBN 0-201-48567-2.

Can someone please help me? I'm using natbib and bibliographystyle plainnat. And since it's the last day before deadline and I'm not that familiar with LaTeX, I'd prefer a solution where I don't need to change those two...

EDIT: apparently I did not express myself well. I don't want those keys in the text. There I already have them. I want them to appear in my bibliography as well.

Martin Fowler. Refactoring: Improving the Design of Existing Code. Addison-Wesley, Boston, MA, USA, 1999. ISBN 0-201-48567-2.

I want:

[Fowler1999] Martin Fowler. Refactoring: Improving the Design of Existing Code. Addison-Wesley, Boston, MA, USA, 1999. ISBN 0-201-48567-2.

Note that Fowler1999 is the citation key I used.

-
Are you using natbib? In this case you could use the authoryear option, assumed you have the keys like that in your bib-file. –  Habi Nov 4 '13 at 11:03
@Habi yeah, I'm using natbib. How do I enable this authoryear option? –  keinabel Nov 4 '13 at 11:05
Don't crosspost. –  Martin Schröder Nov 4 '13 at 21:08

If you use the authoryear and square options of natbib, the keys in your text show up as desired, if you use the \citep-command

\documentclass{article}

\usepackage{blindtext}
\usepackage[square,authoryear]{natbib}
\usepackage{filecontents}

\begin{filecontents}{library.bib}
@book{Fowler1999,
author = {Fowler, Martin},
description = {AOEvolutionchapter short paper},
isbn = {0-201-48567-2},
title = {Refactoring: Improving the Design of Existing Code},
year = 1999
}

@book{Doe2000,
author = {Doe, John},
title = {Awesome title},
year = 2000
}
\end{filecontents}

\setcitestyle{aysep={}}

\begin{document}
\blindtext\citep{Fowler1999}

\blindtext\cite{Doe2000}

\bibliography{library}
\bibliographystyle{unsrtnat}

\end{document}


Or you could use the alpha bibliography style.

\documentclass{article}

\usepackage{blindtext}
\usepackage{filecontents}

\begin{filecontents}{library.bib}
@book{Fowler1999,
author = {Fowler, Martin},
description = {AOEvolutionchapter short paper},
isbn = {0-201-48567-2},
title = {Refactoring: Improving the Design of Existing Code},
year = 1999
}

@book{Doe2000,
author = {Doe, John},
title = {Awesome title},
year = 2000
}
\end{filecontents}

\begin{document}
\blindtext\cite{Fowler1999}

\blindtext\cite{Doe2000}

\bibliography{library}
\bibliographystyle{alpha}

\end{document}

-
I guess I did not express myself well. I don't want those keys in the text. There I already have them. I want them to appear in my bibliography as well. Instead of Martin Fowler. Refactoring: Improving the Design of Existing Code. Addison-Wesley, Boston, MA, USA, 1999. ISBN 0-201-48567-2. I want [Fowler1999] Martin Fowler. Refactoring: Improving the Design of Existing Code. Addison-Wesley, Boston, MA, USA, 1999. ISBN 0-201-48567-2. –  keinabel Nov 4 '13 at 13:26
In this case you can use the 'alpha' style, as mentioned in the second example of my answer. If that does not suit you, you can generate a style for yourself, either with makebst or the graphical user-interface to it here: podoblaz.net/cml/?id=39 –  Habi Nov 4 '13 at 15:40
Or take a look at this question/answer: tex.stackexchange.com/questions/10464 or this one: tex.stackexchange.com/questions/35306 –  Habi Nov 4 '13 at 15:45