编译错误(tableofcontents,maketitle)

编译错误(tableofcontents,maketitle)

我正在尝试编译这个文件:

\documentclass[12pt, a4paper]{book}
\usepackage{doc}
\usepackage[italian]{babel}
\begin{document}
\pagestyle{headings}
\author{Me}
\title{Test}
\date{\today}
\maketitle
\tableofcontenents
\frontmatter
\section{Preface}
\section{Nomenclature}
\mainmatter
\section{Introduction}
\section{Result and discussion}
\subsection{Section}
\subsection{Another section}
\section{Conclusion}
\end{document}

但我收到这两个错误:

! Undefined control sequence.
\maketitle ...ge \global \@topnum \z@ \@maketitle 
                                                  \fi \thispagestyle {titlep...
l.29 \maketitle

?

! Undefined control sequence.
l.30 \tableofcontenents

? 

我该怎么办?谢谢你的建议!

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