You need to include your biblography file as follows:
\bibliography{yourBibtexFile}
\bibliographystyle{apalike} %or any other style you like
And then cite your reference using \cite{hermanss2012}
See the example below:
\documentclass[11pt,a4paper]{article}
\begin{document}
\noindent This is the place for the abstract\cite{hermanns2012}
\bibliography{test} % Or whatever path and filename your bibtex is located
\bibliographystyle{apalike} % Or any other style you like
\end{document}
This seems to do what you want:
\begin{filecontents*}{abcdefg.bib}
@ARTICLE{sievers07,
author = {{Sievers}, J.~L. and {Achermann}, C. and {Bond}, J.~R. and {Bronfman}, L. and
{Bustos}, R. and {Contaldi}, C.~R. and {Dickinson}, C. and {Ferreira}, P.~G. and
{Jones}, M.~E. and {Lewis}, A.~M. and {Mason}, B.~S. and {May}, J. and
{Myers}, S.~T. and {Oyarce}, N. and {Padin}, S. and {Pearson}, T.~J. and
{Pospieszalski}, M. and {Readhead}, A.~C.~S. and {Reeves}, R. and
{Taylor}, A.~C. and {Torres}, S.},
title = "{Implications of the Cosmic Background Imager Polarization Data}",
journal = "Astrophys. J.",
year = "2007",
pages = {976-987},
}
@book{goossens93,
author = "Michel Goossens",
title = "The {LaTeX} Companion",
year = "1993",
publisher = "Addison-Wesley",
address = "Reading, Massachusetts"
}
\end{filecontents*}
\documentclass{scrbook}
\usepackage[T1]{fontenc}
\usepackage{classicthesis}
\usepackage[authoryear,round,colon]{natbib}
\hypersetup{colorlinks=true,citecolor=cyan}% just for the example
\begin{document}
\citep{sievers07,goossens93}
\bibliographystyle{plainnat}
\bibliography{abcdefg}
\end{document}
Best Answer
I solve it
it should be
and use
\citep
instead of\cite