\documentclass[12pt, oneside]{report}

\usepackage[a4paper, left=3.5cm, right=2cm, bottom=2.5cm, top=3cm]{geometry}

% polskie znaki
\usepackage[OT4,plmath]{polski}
\usepackage[utf8]{inputenc}

\usepackage{graphicx}
\usepackage{epsfig}
\usepackage[usenames,dvipsnames]{color}
\usepackage{url}

\graphicspath{{rys/}}


\usepackage{indentfirst} 
\usepackage{nameref}

\newcommand{\rdm}[1]{\textcolor{BrickRed}{#1}}

%Ustalenie wielkości i kroju czcionki (mathptmx - Times New Roman)
\fontsize{10}{12pt}
\usepackage{mathptmx}

% formatowanie nagłówków
\usepackage{fancyhdr}
\fancypagestyle{plain}%
\fancyhf{} % clear all header and footer fields
\fancyhead{} % clear all header fields
\fancyfoot{} % clear all footer fields
\fancyhead[LO,LE]{{\itshape\leftmark}}
\fancyfoot[R]{\thepage}

%Pozbycie się słowa rozdział na początku każdego rozdziału
\usepackage{kpfonts}
\usepackage[explicit]{titlesec}
\titleformat{\chapter}{\normalfont\LARGE\bfseries}{\thechapter.}{20pt}{\LARGE\bfseries #1} 


\begin{document}


%%%%%%%%% FIRST PAGE

\include{strona_tytulowa}

\pagestyle{fancy}
\tableofcontents
\fancyhead[LO]{ {Imię i nazwisko}}
\fancyhead[LE]{Tytuł pracy}


\include{__wstep}
\include{1_przeglad}
\include{2_metoda}
\include{3_implementacja}
\include{4_rezultaty}
\include{_podsumowanie}

%%%%%%%%%%%%
\bibliographystyle{alpha}
\bibliography{pd}

\begin{appendix}
\appendix
\include{dodatek_A}
\include{dodatek_B}
\end{appendix}

\end{document}