# Change font to only section and subsection of my document

I would change the font of section and subsection of my document. I have created it using book class. I would use this font:

According to Adobe pdf propriety, this font is AvantGarde-Demi. How can I use it in Latex. what command I should use to recreate this in latex. I think I should use titlesec package right?

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A good place to start is the LaTeX Font Catalogue –  Peter Jansson Jan 16 '13 at 22:01
According to Latex Font Catologue this found should correspond to AvantGarde –  Mazzy Jan 16 '13 at 22:07
Yes, titlesec is the way to go. –  mafp Jan 16 '13 at 23:07

You can also use sectsty

\documentclass{book}
%\usepackage{avant}
%\renewcommand*\familydefault{\sfdefault} %% Only if the base font of the document is to be sans serif
\usepackage[T1]{fontenc}
%\renewcommand{\sfdefault}{pag} %% To make only sf fonts to be avant garde.
\usepackage{sectsty}
%\chapterfont{\fontfamily{pag}\selectfont} %% for chapter if you want
\sectionfont{\fontfamily{pag}\selectfont}
\subsectionfont{\fontfamily{pag}\selectfont} %% Similarly for others. see the manual of sectsty, section 5.
\begin{document}
\setcounter{secnumdepth}{3}
\chapter{Some chapter}
\section{Event Monitor Pattern}
\subsection{Some sub-section}
\subsubsection{Some sub sub section}

\end{document}


# With titlesec

\documentclass{book}
%\usepackage{avant}
%\renewcommand*\familydefault{\sfdefault} %% Only if the base font of the document is to be sans serif
\usepackage[T1]{fontenc}
%\renewcommand{\sfdefault}{pag} %% To make only sf fonts to be avant garde.
\usepackage{titlesec}
\titleformat{\chapter}[display]
{\fontfamily{pag}\selectfont\huge\bfseries}
{\chaptertitlename\ \thechapter}
{20pt}
{\Huge}
\titleformat{\section}
{\fontfamily{pag}\selectfont\bfseries\Large}
{\thesection}
{1em}
{}
\titleformat{\subsection}
{\fontfamily{pag}\selectfont\bfseries\Large}
{\thesection}
{1em}
{}
\begin{document}
\setcounter{secnumdepth}{3}
\chapter{Some chapter}
\section{Event Monitor Pattern}
\subsection{Some sub-section}
\subsubsection{Some sub sub section}

\end{document}

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