My citations are not defined according to the log but then appear in this strange form in my biblography. This is the Code I use:
\NeedsTeXFormat{LaTeX2e}
\documentclass[ngerman,a4paper,pagesize,oneside,headinclude,parskip=half,DIV14,BCOR5mm,12pt,listof=totoc,bibliography=totoc]{scrbook}
\KOMAoptions{DIV=current}
\pagestyle{headings}
\usepackage{ngerman}
\usepackage[latin1]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage[gen,right]{eurosym}
\usepackage{graphicx}
\usepackage{verbatim}
\usepackage{tabularx}
\usepackage{url}
\usepackage{color}
\usepackage{amssymb}
\usepackage{setspace}
\usepackage{scrhack}
\usepackage{floatrow}
\usepackage{listings}
\usepackage{hyperref}
\usepackage{cite}
\ ...
\setcounter{tocdepth}{3}
\hyphenation{Sil-ben-trenn-ung}
\begin{document}
\frontmatter
\input{files/00_title.tex}
\linespread{1.25}
\tableofcontents
\listoffigures
\listoftables
\mainmatter
\input{files/ch1}
\appendix
\backmatter
\bibliographystyle{agsm} % Harvard-Style
\bibliography{literatur}
\end{document}
And from the bib-file:
@Article{thaler81,
Title = {Some Empirical Evidence on Dynamic Inconsistency},
Author = {Richard Thaler},
Journal = {Economic Letters},
Year = {1981},
}
In ch1, the reference is given by \cite{thaler81}. I used jabref to avoid problems/errors while citing.

I'm new to Latex so this problem might have been there before but I could find or understand the solution. Thanks in advance!
@Articleby@article(smalla). Or delete theauxfile. – Sigur Dec 26 '14 at 19:19\usepackage{harvard}(before\usepackage{hyperref}). Remove\usepackage{cite}. – egreg Dec 26 '14 at 20:27@articleand@Articleare equally good -- capitalization does not matter for the spelling of the names of entry types and fields. – Mico Dec 27 '14 at 02:46