Quero colocar um ponto após os números de seções, subseções e subsubseções

Question

Meu objetivo é o indicado no título da pergunta. Existem outras questões abordando isso, mas as respostas selecionadas, pelo que posso dizer, não combinam com meu outro código existente, que está resumido abaixo.

\documentclass[11pt]{article}
\usepackage{amsmath,amsthm,titlesec}
\numberwithin{equation}{section}
\newcommand{\periodafter}[1]{#1.}
\newcommand{\presectionskip}{-1\baselineskip}
\newcommand{\postsectionskip}{0.3\baselineskip}

\makeatletter
    \renewcommand{\section}{\@startsection
        {section}{1}{0mm}%% name, level, indent
        {\presectionskip}% % beforeskip
        {\postsectionskip}% % afterskip
        {\normalfont\LARGE\bfseries}}% % style
    \renewcommand{\subsection}{\@startsection
        {subsection}{2}{0mm}
        {\presectionskip}
        {\postsectionskip}
        {\normalfont\Large\bfseries}}
    \renewcommand{\subsubsection}{\@startsection
        {subsubsection}{3}{0mm}
        {\presectionskip}
        {\postsectionskip}
        {\normalfont\normalsize\bfseries}}
\makeatother

%\usepackage[font=bf]{caption}
%\titleformat{\section}{}{\thesection.}{1ex}{\periodafter}
%\titleformat{\subsection}{}{\thesubsection.}{1ex}{\periodafter}
%\titlelabel{\thetitle.\quad}

\begin{document}
\section{Good section}\label{sec:refl}
\subsection{Superior subsection}\label{tableworks}
\subsubsection{This, the best of all subsections}
\end{document}

Obrigado por qualquer idéia sobre como fazer isso funcionar.

Answer 1

A solução fornecidaaquifunciona perfeitamente. Você também se preocupa em obter um ponto nas referências?

% arara: pdflatex

\documentclass[11pt]{article}
\usepackage{titlesec}
\newcommand{\presectionskip}{-1\baselineskip}
\newcommand{\postsectionskip}{0.3\baselineskip}
\makeatletter
\renewcommand{\section}{\@startsection
    {section}{1}{0mm}%% name, level, indent
    {\presectionskip}% % beforeskip
    {\postsectionskip}% % afterskip
    {\normalfont\LARGE\bfseries}}% % style
\renewcommand{\subsection}{\@startsection
    {subsection}{2}{0mm}
    {\presectionskip}
    {\postsectionskip}
    {\normalfont\Large\bfseries}}
\renewcommand{\subsubsection}{\@startsection
    {subsubsection}{3}{0mm}
    {\presectionskip}
    {\postsectionskip}
    {\normalfont\normalsize\bfseries}}
\renewcommand{\@seccntformat}[1]{\csname the#1\endcsname.\quad}
\makeatother
\usepackage{blindtext}

\begin{document}
    \section{Good section}\label{sec:refl}
    \subsection{Superior subsection}\label{tableworks}
    \subsubsection{This, the best of all subsections}
    \blindtext
\end{document}